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September 20, 2014

September 20, 2014

Posted by **Anonymous** on Monday, April 4, 2011 at 2:54pm.

- geometry -
**Ms. Sue**, Monday, April 4, 2011 at 3:08pmA = pi * r^2

28.26 = 3.14 * r^2

28.26 / 3.14 = r^2

9 = r^2

3 = r

D = 2r

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