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Mathematics 12 Online
OpenStudy (anonymous):

A hot water heater measures 20" in diameter. What is the area of a metal base for the water heater, assuming a four-inch overhang for the base beyond the edge of the heater? (Round to the nearest tenth.)

OpenStudy (anonymous):

pi*(20+2+2)^2/4 = 452 in^2 = 3.14 ft^2

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