 Surface area of a rectangular box formula      surface area of a rectangular box formula Given below is an illustration of rectangular prism: The Surface Area of a Rectangular Prism Formula is, For example, if a box has a volume of 4000 cubic inches, a surface area of 1600 square inches, and a diagonal of 30 inches, then its dimensions are 20, 20, and 10. 2. Point out that excel knows about order of operations. Since a rectangular box or tank has opposite sides which are equal, we calculate each unique side's area, then add them up together, and finally multiply by two to find the total surface area. A = 49 sq. (See ). Everything else so far works except for this surface area. Given a cylindrical soup can, the total surface area is the area of the can’s label plus the AREA, VOLUME AND SURFACE AREA {4} A guide for teachers ASSUMED KNOWLEDGE • Knowledge of the areas of rectangles, triangles, circles and composite figures. Find here the Total surface area and volume of box formula for deriving the total surface area and the volume of a box for the given height, width and length. Through an equation that uses lateral area. For rectangular shapes that are a perfect cube, try the Simple Cube conversion. Mar 22, 2020 · The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. w 2 + 576 = 676. CCSS: 7. The document has moved here. May 10, 2010 · If the height of the container is given by h, the volume of the container is V=x^2*h and the surface area of the container is S=2x^2+4xh. c+c. Back Surface Area and Volume of Solids Geometry Mathematics Science Contents Index Home. The surface area of a box, and its volume; The length of the diagonal of a box; Each student should bring an empty cereal box (or some other box) to work on. units ^2. To find the surface area of a cuboid, add the areas of all 6 faces. Find the surface area of each rectangular prism. SA = 6 (72) SA = 6 x 49 SA = 294 sq. The amount of space inside the crate is Matt finds a box with dimensions 16 by 8 by 8 inches. The volume of the box is ___ in. What is the surface area of the box? Surface Area = 9) Surface Area = 7) Surface Area = 8) Surface Area = 6 in 13 in 4 in 3) Surface Area = 5 ft t 14 ft 1) Surface Area = 13 in 9 in 3 in 2) Surface Area = 20 yd 6 yd d Surface Area = 4) Surface Area = 6 The area of any rectangular place is or surface is its length multiplied by its width. A rectangular prism has total 12 lengths. Cereal Box Surface Area Project includes: 3 Cereal Box Surface Area student worksheets. the volume of a rectangular Moved Permanently. w = 10. What is the formula to find the surface area cuboid? Ans: The formula for finding the areas of a cuboid are: The lateral surface area of a cuboid $$= 2h(l + b)$$ sq. A cheerleading coach is having the squad paint wooden crates with the school colors to stand on at the games. where l is the length, w is the width, and h is the height of the rectangular prism. We then add up all the areas to get the total surface area. We can define a rectangle as a four sided quadilateral whose all internal angles are right angles. com Oct 03, 2021 · The lateral surface area of an object is equal to the surface area minus the area of the bases of the object. Express the surface area SA of the box as a function of the length of a side of the base, x. Substitute h from the formula of A to the formula of the Area = 5000 yards squared Find the surface area of this polygon: This looks confusing at first, but we can make this easier by dividing it up into two rectangles like this: Now we can add the surface area of the two rectangles: The top rectangle is 2 x 5 = 10. To use this formula, we plug in our values For example, if a box has a volume of 4000 cubic inches, a surface area of 1600 square inches, and a diagonal of 30 inches, then its dimensions are 20, 20, and 10. The box is 4000L 2300W 3200H. e. The unit of measurement for the surface area of rectangular prism is done in square units. Sum up all the values together to get the area of the whole shape: lw + lw + wh + wh + LH + lh. Surface Area = 2(lh) + 2(lw) + 2(wh) Volume = lhw 2 + 2. One method of calculating the TSA (Total Surface Area) is to “unfold” a 3D shape, into its flat “2D” net which the shape is made from. The bottom rectangle is 2 x 4 = 8 The total surface area is 10 + 8 = 18. It has six flat faces and all angles are right angles. We must find Area hw, which is the area of the side that is h by w. 7 × 4=28 cm. An open rectangular box with volume 5 m3 has a square base. A rectangular bedroom with one wall being 15 feet long and the other being 12 feet long is simply 12 x 15 = 180 square feet. s = side width and square side . 4 s 1372/s^2 + s^2 = area. A cuboid is a box-shaped object. o Select B4 and enter =2*rp1len*A5+2*rp1len*rp1ht+2*a5*rp1ht to see a surface area of 22. Write an equation expressing the fact that the volume is 10 cubic feet. 7x6=42 cm Area of one of the side faces will be equal to bc, i. S A of face two=3x2=6cm2 (opposite end to face one) S A of Face three=2x5=10cm2 Surface area of a box (cuboid) Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. pdf - AST FORMULA SHEET perimeter of rectangle P = 2L 2W area of rectangle A=LW surface area of box SA = 2(L W 2(L H 2(W H volume of box. Total Surface Area and Volume of a Box. Formulas V = WLH S = 2(WL + WH + LH) D = sqrt(W 2 + L 2 + H 2) Example: A shipping box is 24 inches long, 18 inches wide, and 20 inches tall. As we know that the surface area will be the sum of the four rectangular sides' areas and the base area (because this box is opened) Base area = x²; Rectangular side area = xh; A = x² + 4xh <=> (A - x²)/4x = h. 4sh + s^2 = area . For example, a garden shaped as a rectangle with a length of 10 yards and width of 3 yards has an area of 10 x 3 = 30 square yards. Question 348410: The formula S= 2lw + 2lh + 2wh gives the surface area of a rectangular prism with length l, width w, and height h. The amount of space inside the crate is We can define a rectangle as a four sided quadilateral whose all internal angles are right angles. 35 Surface area to volume ratio is also known as surface to volume ratio and denoted as sa÷vol, where sa is the surface area and vol is the volume. The bottom and top faces are rectangles with sides of length l and w. The length l, width w, and height h are expressed in whole numbers. When all sides are of equal dimensions, it becomes a cube. The surface area, S, of a rectangular prism is: S = 2lw + 2lh + 2wh. Using the same dimensions, we can calculate the perimeter. com. Answer (1 of 5): Hi! By surface area, I presume that the question refers to the total surface area; However, we would calculate the lateral surface (Wall) Area too. (See Figure 9. Formula to find the surface area of a rectangular prism. Therefore, since the solid has two bases (the bottom one and the top one), the surface area of a rectangular prism formula is as follows: surface_area = 2 * base_area + lateral The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. Mar 26, 2013 · The problem provides the volume of box, hence, using the formula of volume, yields: The surface area of the open box is 50*10*4 + 100 = 2100 square inches. Area of front and back face = 2 hl. The surface area of a rectangular tank is the sum of the area of each of its faces: SA = 2lw + 2lh + 2wh where l is the length, w is the width, and h is the height Oct 06, 2020 · Note, that A_b denotes the surface area of a single base of our prism. The amount of paint needed to cover the outside of each box is the surface area, a square measure of the total area of all the sides. In fact it is a rectangular prism. the volume of a rectangular May 03, 2017 · Hmm I tried that formula in a console application and it worked perfectly. Surface area of a cube: A = 6a², where a is the side length. Here is a chart of some of the figures we’ll be looking at for surface area: Shape Picture Formula Cube Surface area = 6 × a2 Rectangular Prism Surface area = l X w X h Cylinder Surface area out the surface area of the box. Find Volume and Surface Area of Rectangular Solids. Cuboids, Rectangular Prisms and Cubes. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area. Jul 15, 2019 · Surface area will be the are of the square bottom PLUS the 4 rectangular sides . On the other hand, A_l denotes the lateral area, meaning the total area of the four lateral faces. To find the diagonal using the same The total surface area of a solid can also be thought of as the area of the solid’s net. Welcome to OnlineConversion. Its volume is the number of centimeter cubes that will fit inside the box. The surface area, S, of a cube with edge, s, is: S = 6s 2. Perimeter, Area, and Volume Volume is a measure of capacity or space. Dec 29, 2015 · S = 2lw + 2lh + 2wh If we consider the structure of a box with length l, width w, and height h, we may note that it is formed from six rectangular faces. Area of right and left side face = 2 hw. w 2 = 100. l=length. The total surface area is made up of three pairs of sides for a total of six sides. The perimeter is 2 a + 2 b, so in this example the perimeter. Either way, finding the surface area and the volume require the same formulas. , Answer. Cuboids or rectangular prisms have 6 rectangular faces. (Add up the areas of each face. Area is measured as a square of a length. What is surface area examples? Surface Area Terms Defined For example, a sphere and a cube are three-dimensional, but a circle and a square are not. And the remaining two side faces have side lengths w and h. The diagonal of a rectangle divides it into two congruent right triangles. Calculate the total surface area of box A and of box B. Question 1: Find the area of the rectangle if the length is 7 cm and the width is 5 cm. 2 + 2. square area = s^2 . The formula for the lateral surface area of a rectangular box, also called a cuboid, is 2h(l + w), where l = length, w = width, and h = height. Examples of Surface area of a Rectangle. Capacity is the space inside a solid figure. Kepp at least 4 decimal places in your computed values for the side of the base and the height and give the minimum surface area rounded to two decimal places. Surface Area of a Rectangular Box. Moved Permanently. TSA of Rectangular Prisms. To calculate the area of the container's side, imagine unwrapping the side into a rectangle so the area of the side is the circle circumference times the container height. Math Content: Surface Area, Volume, Measurement, Ratios, Rectangular Prism, Fractions, Decimals, Net of a Rectangular Prism, Converting Fractions to Decimals. Surface area of Cylinders: The surface area of a cylinder is the sum of the lateral area and the areas of Formula Sheet. Rectangular prism is a solid three dimensional object, it has either six flat surfaces of rectangles or four rectangles with two squares. SA=2(lw+lh+wh) Since the area of a rectangle is a product of its length and width, we need to find the width. Given a cylindrical soup can, the total surface area is the area of the can’s label plus the o Select column C and Insert/Column to use for surface area o Label C4 Surface Area o Review the formula for surface area as 2lw+2lh+2wh with implied multiplication and order of operations. Details include rectangle description, surface area formula (2 × (L × H) + (W × H) + (L × W)), and practice calculator. A solid that is unfolded like this is called a net. Since a box is a rectangular prism, especially given the length and width, we can use this formula for the surface area of the box. One cool thing about this equation is that. SA = 2 WH +2 LW + 2 LH. What volume can the box hold? Use the formula V = Bh to calculate the volume of the box. The length (l) of the base is three times the width (w). Formulas: Rectangle ( )( ) Dec 18, 2018 · T he formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. The formula depends on the type of the solid. • The definitions of a parallelogram and a rhombus. • Formula in finding the area of a cube: • SA = 6S2 Find the surface area of the cube: 14dm 3. P = 2 (6) + 2 (4) = 20 inches. The area of the rectangle is: A = l×w = 24×10 = 240. The surface area formula for a rectangular box is 2 x (height x width + width x length + height x length), as seen in the figure below:. Surface area of a rectangular prism formula. Surface area of prism = 2 × area of base + perimeter of base × height of prism. Right Volume of rectangular solid = L × W × H Total Surface area of rectangular solid = 2(L × W + L × H + W × H) Use of the calculator of Volume and Area of a Rectangular Solid Enter the length, width and height of the rectangular solid as positive real numbers and press "Calculate". This is easier to understand if we imagine the prism to be a cardboard box that we can unfold. Since the area of a rectangle is a product of its length and width, we need to find the width. To find the surface area of the rectangular box we just need to add up the areas of all six sides. You won’t even need to use a surface area calculator for this. h = 1372/s^2 . It is calculated by multiplying the height and width (surface area ) of each face and adding them together. Question 2: Find the area of the square if each side of the square is 6 cm. Finding the areas of each of the rectangles and squares of the net of a rectangular prism and adding up those areas gives the surface area or total surface area of the prism. Two of the side faces have side lengths l and h. Formula to calculate the surface area of a rectangle. (Enter your answer in interval notation. A 3-D object is any figure or form that has Length, Width and Height. - hmwhelper. Geometry - Surface Area Of A Rectangle Calculator Math K-Plus is a free website that provides many homework lessons and study tools to help children learn math. For example, think of a rectangular box (which is really a rectangular prism) that is measured in centimeters. It is a solid shape with 6 rectangular faces. The surface area $S$ of the rectangular solid shown above is $52$ square units. The Total surface area of a box is the total of the area outside all the sides of the box. 2. Its volume is then (18)(24)(20) = 8640 If "l" is the length, "w" is the width and "h" is the height surface area of the box is given by the formula Surface Area of the box = 2 (lw+lh+hw) square units How to Calculate Surface Area of a Box In order to calculate the surface area of a box or rectangular prism all you need to do is find the areas of each side and sum up all those. . Volume = s x h x s = s^2h = 1372 cm^3 . A right rectangular prism’s surface area is the sum of the areas of all its faces: the top, the bottom, and the four sides. All A box is nothing but a right rectangular prism. Example: Find the surface area of prism shown in the figure. 5488/s + s^2 = area Formula Sheet. 10) A rectangular-shaped box has the following dimensions: 12 yards, 8 yards, and 18 yards. It can also be called as the rectangular parallelepiped. A = a * b , so A = 6 (4) = 24 inches². It’s your typical box. For example a block measuring 3cm by 2cm by 5cm would have a surface area of. Find the dimensions of the box that will minimize the surface area. h=height. w Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. Cube. In general, to find the surface area of a rectangular solid, remember that each face is a rectangle, so its area is the product of its length and its width (see the image below). Work out the surface areas of the following rectangular prisms and cubes. b+b. Substitute h from the formula of A to the formula of the Find Volume and Surface Area of Rectangular Solids. Consider the closed rectangular box in Exercise 4. (The length, width, and height of the box should all be different. o Select column C and Insert/Column to use for surface area o Label C4 Surface Area o Review the formula for surface area as 2lw+2lh+2wh with implied multiplication and order of operations. We know that two of the sides are 36 square centimeters, that means we need to find the areas of the four mising sides. She knows the dimensions, so she can use these dimensions to help solve the problem. Answer: The area of the rectangle is W X L = 7 x 5 cm 2 = 35 cm 2. A cuboid has 6 rectangular faces. The following two boxes are rectangular prisms. For instance, units could be in cm2, ft2, etc. • Familiarity with the volume of a rectangular prism. Apply the formula SA = 2(lw + lh+ wh), find the surface area, and represent the answer in square units. Find the value of h Answer by stanbon(75887) (Show Source): Jul 15, 2019 · Surface area will be the are of the square bottom PLUS the 4 rectangular sides . To find the surface area, use this rectangular prism surface area formula: Surface Area = [(Length x Width) + (Length x Height) + (Width x Height)] x 2 Example: The surface area of a rectangular prism with length of 3 inches, width of 4 inches, and height of 5 inches: Surface Area = [(3 x 4) + (3 x 5) + (4 x 5)] x 2 Calculated out this gives a Example of calculating the area of a rectangle: Suppose the length is a = 6 inches and the width is b = 4 inches. For help with using this calculator, see the object surface area help page. Nov 15, 2021 · Ans: The total surface area or TSA of a cuboid is the sum of all $$6$$ rectangular faces, including top and bottom. How much the paper will you need to wrap the gift box? Surface Area = 8 ft 15 ft t 9) Surface Area = 7) Surface Area = 12 cm 2 cm 7 cm 8) Surface Area = 6 in 13 in 4 in 3 Formula Sheet. And all of its faces are rectangles. 1. TSA of a cuboid $$= 2(lb + bh + lh)$$ Q. Many common objects have well-defined formulas for finding their surface areas. and the volume formula is: V = x²h. Using a net to find the surface area of a rectangular prism. com Dec 17, 2018 · A rectangle in three dimensions becomes a rectangular prism. write a formula for the volume of the box as a function of x. A rectangular box with no top (pictured above) is to contain 2250 cubic inches of volume. The area of the base of the box, B, is ___ in. The finished cereal box projects are perfect for classroom display. Property of Addition ( a + b = b + a ) Find the surface area of this rectangular prism: 6 cm. units Find Volume and Surface Area of Rectangular Solids. Formula Sheet. x = sin y 329. What will it cost to paint both boxes if the paint costs R1,34 per m 2? Two cartons, which are rectangular prisms, are glued together as A right rectangular prism is the shape of a box with a rectangle for a bottom, with sides perpendicular to its bottom, and with a flat top parallel to its bottom. Apr 28, 2013 · In this lesson we show how to calculate the Total Surface Area of Rectangular and Triangular Prisms, including Cylinders, as well as the TSA of Pyramids. All Oct 08, 2016 · The area of the base is the area of a circle = $\pi r^{2}$. G. Examples: Given a bedroom in the shape of a rectangular prism, the total surface area is the area of the four walls plus the area of the ceiling and the floor. We mark the length l, width w, and height h of the prism and use the formula, Area of top and bottom face = 2 lw. Among all of the shapes, the surface area of a cube is the easiest one to find. units Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. For example, the length of the box (a) is 7 cm, width (b) 6 cm, and the height (C) 4 cm Then the area of the upper (lower) faces will be equal to ab, i. Formula to find the surface area of a prism. Surface area of a sphere: A = 4πr², where r stands for the radius of the sphere. Dec 18, 2018 · T he formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. It is also a prism because it has the same cross-section along a length. ) SA = ? m^2; Question: Find a formula for the described function. The surface area of the rectangular prism is the sum of the area of lateral faces and rectangular bases. Time Required: 1-2 Class Periods. Surface area formulas. SA=2(lw+lh+wh) 2 + 2. Sep 15, 2011 · The surface area is the total external area of the shape. Given below is an illustration of rectangular prism: The Surface Area of a Rectangular Prism Formula is, Apr 22, 2021 · A rectangular in three dimensions becomes a rectangular prism (or a box). For example, if the length of one side of the cube 4 units then the area of one its face is 4 × 4 = 16 square Jul 06, 2011 · To begin calculate the area of three different faces of the parallelepiped. 28). The volume, or amount of space inside a box is h × W × L. The boxes must be painted. cm. To find the surface area of a prism, the problem can be approached in one of two ways. Correct answer to the question Calculate the area of the following rectangular box. Does the answer agree with the formulas we have previously determined? 328. Go to Surface Area or Volume. The amount of space inside the Formula Sheet. If the surface area of the rectangular box is 78 square feet, find when x = 3 feet and y = 5 feet. For example, if the length of one side of the cube 4 units then the area of one its face is 4 × 4 = 16 square Apr 28, 2013 · In this lesson we show how to calculate the Total Surface Area of Rectangular and Triangular Prisms, including Cylinders, as well as the TSA of Pyramids. com out the surface area of the box. 6 Correct answer to the question Calculate the area of the following rectangular box. Answer: Total surface area of a rectangular box is 2. Learn why the formulas for finding the volume and surface area of a rectangular box work! See a few examples and gain a better understanding what volume and Examples of Surface area of a Rectangle. To find the area of any rectangular Prism, you can use this formula, Here, we need to just sum up the determined value of the six areas of six faces of the rectangular prism: 30 + 30 + 40 + 40 + 48 + 48 = 94 square inches. Based on the measurements of the height, width and length you can calculate the surface area and volume of a box. , 6x4=24, see Finally, the area of the front (rear) face is equal to ac, i. • Familiarity with the basic properties of parallel lines. The surface area of a rectangular prism formula is. Rectangular prism. Return to the Object Surface Area section. a ]. w=width. cm • Surface Area of a Cube: • Since there are 6 squares , multiply the area by 6. Surface area of prisms and cylinders (EMBHX) Surface area is the total area of the exposed or outer surfaces of a prism. Problem 12 Easy Difficulty. Since the formula for the surface area of a square is: A = 6 * (side area) The area of the square equals the product of the length of all of its sides. Relevant MM Lessons: Forthcoming; Boxes As long as the box you're working with truly fits the definition of a box, meaning it is built of rectangles on all sides and bases and is not slanted, then it has three measures: a length, a width, and a height. This is an example of the Commutative. The circumference of a circle = $2\pi r$ For the rectangular container: Sep 08, 2021 · An open rectangular box with a square bottom must have a surface area of a square inches. To use this formula, we plug in our values and then evaluate. The surface to volume ratio of this rectangular box = 1. The Volume of a box can be found by just multiplying all the three inputs (h, w, l) together. Write an expression for the surface area. Therefore, the formula for the surface area of a Formula Sheet. For the following exercises, use implicit differentiation to determine y'. As the area of a rectangle is the product of its side lengths Surface area of a box. 3. Must be somewhere else in my code then, because it gives me this impossibly huge number starting with 812,649, this calculation is done in a class I made for all the different shape calculations. Use the measurements given to work out the surface area of the prism. Using the second method, it's helpful to realize rectangular prisms contain faces. SA=2 (lw+hw+lh), where. Mar 25, 2020 · Let A is the surface area of the box. S A of face two=3x2=6cm2 (opposite end to face one) S A of Face three=2x5=10cm2 The surface area of the rectangular prism is the sum of the area of lateral faces and rectangular bases. ) Explain to a classmate why you think the following formula is or is not correct: Surface area of a rectangular prism $$= 2(l \times b) + 2(l \times h) + 2(b \times h)$$ Correct answer to the question Calculate the area of the following rectangular box. ) A ruler and a calculator (we used a TI-108) are also needed. where a , b and c are the length , breadth and height respectively. S = 2lw + 2lh + 2wh. Its volume is then (18)(24)(20) = 8640 Welcome to OnlineConversion. To find the area of the missing sides we can just multiply the side of one of the squares (6 cm) by the width of the box: Volume of rectangular solid = L × W × H Total Surface area of rectangular solid = 2(L × W + L × H + W × H) Use of the calculator of Volume and Area of a Rectangular Solid Enter the length, width and height of the rectangular solid as positive real numbers and press "Calculate". com the area of all the sides of a 3-D object together to get the total surface area. The outside surface area of a box is 2(h × W) + 2(h × L) + 2(W × L) Learning Outcomes Find the volume and surface area of a rectangular solid A cheerleading coach is having the squad paint wooden crates with the school colors to stand on at the games. Find out the things about a box using our simple online total surface area and volume of box calculator. (See the image below). 10) A gift box in the shape of a rectangular prism has 20 centimeters length, 14 centimeters width and 10 centimeters height. a 327. Right Relevant MM Lessons: Forthcoming; Boxes As long as the box you're working with truly fits the definition of a box, meaning it is built of rectangles on all sides and bases and is not slanted, then it has three measures: a length, a width, and a height. Surface area of a rectangular prism = 2 (l × w + w × h + l × h) Where, l – length of the prism. May 03, 2017 · Hmm I tried that formula in a console application and it worked perfectly. And State the domain of SA. Our pdf worksheets are meticulously designed for 6th grade, 7th grade, and 8th grade students. it doesnt matter in what order you find. Answer: The area of the square is L X L = 6 x 6 cm 2 = 36 cm 2. Since a rectangle is a 2 – dimensional shape, so its surface area is the same as its area. h = height of rectngle area surface area of the 4 sides = s x h x 4 = 4 sh . your answer will also include the constant, a. Through finding the area of each side and taking the sum of all the faces. S A of face one= 3x2=6cm2. If the surface area of the rectangular box is | Chegg. the area of the faces. [a. Using the Pythagorean theorem: w 2 + 24 2 = 26 2. To find the surface area, use this rectangular prism surface area formula: Surface Area = [(Length x Width) + (Length x Height) + (Width x Height)] x 2 Example: The surface area of a rectangular prism with length of 3 inches, width of 4 inches, and height of 5 inches: Surface Area = [(3 x 4) + (3 x 5) + (4 x 5)] x 2 Calculated out this gives a The total surface area of a solid can also be thought of as the area of the solid’s net. What is the surface area of the box? Surface Area = 9) Surface Area = 7) Surface Area = 8) Surface Area = 6 in 13 in 4 in 3) Surface Area = 5 ft t 14 ft 1) Surface Area = 13 in 9 in 3 in 2) Surface Area = 20 yd 6 yd d Surface Area = 4) Surface Area = 6 Sep 10, 2020 · Formula for the surface area of… Our surface area calculator can find the surface area of seven different solids. surface area of a rectangular box formula

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