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The circumference of a circle is 18pi ft. What is the area, in square feet? Express your answer in terms of pipi.

Solution

The circumference of a circle is 18\pi ft. What is the area, in square feet? Express your answer in terms of pi\pi.

Solution

a re a : 81 π f t^{2}

+1

Solution steps

Given:

c i rc u m f ere n ce : 18 π f t

Radius given

C i rc u m f ere n ce = 18 π : r = 9

Circle Area given

r = 9 : A = 81 π

a re a : 81 π f t^{2}

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