Homework Help: Math

Posted by Callie on Friday, January 20, 2012 at 1:52pm.

The area of a circle is 16π cm2. What is the circle's circumference?
2π cm
4π cm
8π cm
16π cm

Math - Ms. Sue, Friday, January 20, 2012 at 2:03pm
The radius must be 4 cm.

C = pi * diameter

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