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July 30, 2014

July 30, 2014

Posted by **Kim** on Wednesday, July 18, 2012 at 12:11pm.

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.

- Updated Math Question -
**Reiny**, Wednesday, July 18, 2012 at 12:58pmno, the answer is d)

let the radius of first circle be r

area = πr62

let the area of 2nd circle be 9r

area =π(9x)^2 = 81πr^2, which is 81 times larger.

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