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

The area of a circle is 28.26 square centimeters. What is its diameter (use 3.14 for ð)?

A = 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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