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September 21, 2014

September 21, 2014

Posted by **Austin** on Monday, February 23, 2009 at 6:52pm.

- circles -
**Willow**, Monday, February 23, 2009 at 7:15pmLike I said with awl, I found the circumference forumla, which is:

c = pi times diameter

OR

c = 2 times pi times radius

I can't find the area formula. :(

Just place in 3 where I said "radius."

Hope I helped! :)

- circles -
**Ms. Sue**, Monday, February 23, 2009 at 7:17pmArea = pi * radius squared

A = pi*r^2

A = 3.14 * 9

A = 28.26 square inches

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