The circumference of a circle is 18π cm. What is the area, in square centimeters? Express your answer in terms of \piπ.

Question

The circumference of a circle is 18π cm. What is the area, in square centimeters? Express your answer in terms of  piπ.

Dulcie · Answer

Answer:   Below    Step-by-step explanation:   Circumference of circle = pi * 2r        18 pi = pi 2r         r = 9     Area = pi r^2 = pi (9^2) = 81 pi

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