# The exact area of a circle is 81 pi square inches what are the radius and diameter of the circle

(2) Answers

area is pi*r^2 so if area is 81pi, means r=9 diameter is 2*pi*r =2*pi*9=18pi

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(2) Answers

area is pi*r^2 so if area is 81pi, means r=9 diameter is 2*pi*r =2*pi*9=18pi

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