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January 31, 2015

January 31, 2015

Posted by **lily** on Tuesday, August 21, 2012 at 10:22pm.

- math math math -
**Ms. Sue**, Tuesday, August 21, 2012 at 10:27pmA = pi * r^2

C = pi * d

http://www.mathsisfun.com/geometry/circle.html

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