Answer:
9 + 3 + 3 = 15
15 x 12 x 1/2(basically just dividing by 2) = 90
9 x 12 = 108
108 + 90 = 198 in^2 for a
7 x 7 = 49
7 x 7 = 49, 49 divided by 2 ( x 1/2) = 24.5
49 + 24.5 = 73.5 ft^2 for b
175.5in
Explanation:
12 x 9 + 67.5
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