What is the surface area of a rectangular solid measuring 4 by 3 by 5?
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Correct answer to question 195 (Mathematics Knowledge): 94
Method
Surface area sums the areas of all six faces, which come in three matching pairs: 2 x (4x3 + 4x5 + 3x5) = 2 x (12 + 20 + 15) = 2 x 47 = 94.
Updated: November 2026
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