A fountains pool is enclosed by a circular plastic tank. The distance from the center of the pool to the wall of the tank is 10 feet. How long is the wall of the tank in feet?
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wall is the radius of the tank and is equal to 10 ft. The length of the wall of the circular tank would be its circumference (C = 2πr). Since you have the radius, you can solve for the circumference as
C = 2π(10 ft.) = 20π ft. ≈ 62.832 ft.
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