The radius of circle A is 9 times greater than the radius of circle B. Which of the following statements is true?
A.The area of circle B is 9 times greater than the area of circle A

B.The area of circle A is 9 times greater than the area of circle B.

C.The area of circle B is 81 times greater than the area of circle A.

D.The area of circle A is 81 times greater than the area of circle B.

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  1. Area = π r^2

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