math

A circular swimming pool has radius of 15 feet. The family that owns the pool wants to erect a circular fence that is 5 feet away from the pool. Which is the closest to the circumference of the fence they will need? A. 94.2 ft B. 125.6 ft C. 157 ft D. 188.4 ft

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  1. The radius of the fence would be 20 ft
    circumf = 2πr = 2π(20)
    = 40π or appr 125.66

    so I guess B comes closest

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  2. 21.89m2

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