For easy calculation and presentation of answer, I will convert all the fractions here to decimals:
2 1/2 = 2.5 ft
1 1/2 = 1/5 ft
3 1/2 = 3.5 ft
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Find Surface Area :
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Surface Area = 2(2.5 x 1.5) + 2(1.5 x 3.5) + 2(3.5 x 2.5)
Surface Area = 7.5 + 10.5 + 17.5
Surface Area = 35.5 ft² (Decimals) or 35 /12 ft² (Fraction)
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Answer: Surface Area = 35 1/2 ft²
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