The formula for the surface area of a cuboid with the dimensions 𝒍 ... Find the total of the areas of all faces. 72 + 42 + 168 = 282 The total surface area of the cuboid is 282 cm².
To calculate the total surface area of a prism: Find the area of the two end faces. Work out the area of all the rectangular faces in one of two ways: Work out the area of each rectangle ...
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