Posted by Cindy on Monday, September 7, 2009 at 7:28pm.
What's the circumference of a circle whose area equals 20x 3.14 cm squared in centimeters?

geometry  Ms. Sue, Monday, September 7, 2009 at 7:31pm
C = pi * d
A = pi * r^2
The radius must be 20 cm, so the diameter is 40 cm.
C = 3.14 * 40