SOLUTION: Find the area of a circle whose circumference is 18pi diameter.

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Question 19899: Find the area of a circle whose circumference is 18pi diameter.
Answer by vidyamanohar(13) About Me  (Show Source):
You can put this solution on YOUR website!
circumference=pi x diameter =18pi
so, diameter = 18
the radius is half the diameter, so, radius =9
Area of the circle= pi(radius)^2=pi(9)^2=81 pi