a = 6 in , h = 12 in V o l u m e = 3 1 B ⋅ h B i s t h e a re a o f t h e ba se h i s t h e h e i g h t B = a 2 V = 3 1 ⋅ a 2 ⋅ h = 3 1 ⋅ 6 2 ⋅ 12 = 36 ⋅ 4 = 144 i n 3 A n s w er : D .144 i n 3
The volume of the square pyramid is 144 cubic inches, calculated using the formula V = 3 1 B h . The area of the base is 36 square inches and the height is 12 inches. Therefore, the correct answer is D. 144 in³.
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