A cylinder has a volume of 288 pi cubic meters and a height of 9 meters. What is the area of the base?

The volume of a cylinder is base area times height: V = Bh. Divide the volume, 288π cubic meters, by the height, 9 meters: B = 288π ÷ 9 = 32π square meters. Therefore, the base area is 32π square meters, choice B.

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