Question 10 • Grade 7 Mathematics
A rectangular prism has three pairs of matching faces, so its surface area is 2(lw + lh + wh). Substituting the dimensions gives 2((8 × 3) + (8 × 5) + (3 × 5)) = 2(24 + 40 + 15) = 158 square feet. The correct choice is 158 square feet.
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