![]() In the above example, we have already calculated the two faces, each the same size. Finding the area of the left and right faces: In the above example, w = 5 inches and h = 8 inches, so the front area is 5 inches x 8 inches = 40 square inches. So, the area of the front face = Width * Height, and the back area is the same Width * Height. Go through the previous diagram and see the front face: the one with one edge shown width and another one is shown height. Finding the area of the front and back faces: We have already calculated the top area is 30 square inches. Previously we have already discussed that the top and bottom faces are the same in size. Area of the bottom edge = length * Width.Ĭonsider an example we have mentioned above, the length of the prism is considered as 6 inches and width is 5 inches, so the area of the bottom face is 6 inches x 5 inches = 30 square inches. If you want to calculate the rectangle area, you need to multiply the two edges together. One edge of the rectangle is considered as length, and another one is considered as width. It forms a rectangle shape, just the same as each face.
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