Problem

Find the surface area of the rectangular prism.

Answer

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Answer

Sum the doubled areas: \(2A_1 + 2A_2 + 2A_3\)

Steps

Step 1 ：Find the areas of each face: \(A_1 = l * w\), \(A_2 = l * h\), \(A_3 = w * h\)

Step 2 ：Double the areas of each face: \(2A_1\), \(2A_2\), \(2A_3\)

Step 3 ：Sum the doubled areas: \(2A_1 + 2A_2 + 2A_3\)

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