Answer:
241.5 in²
Explanation:
a = 11.5×3 = 34.5 in²
b = 7.5×11.5 = 86.25 in²
c = a = 34.5 in²
d = b = 86.25 in²
lateral area = 2×34.5 + 2×86.25 = 241.5 in²
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