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September 21, 2014

September 21, 2014

Posted by **Anita Maureen** on Wednesday, April 23, 2008 at 9:20pm.

- Math -
**Ms. Sue**, Wednesday, April 23, 2008 at 9:31pmCircumference is the distance around the circle. The circumference equals pi times the diameter.

Example for a circle with a 4 cm diameter:

C = pi * d

C = 3.14 * 4

C = 12.56 cm

The area of a circle equals pi * radius squared.

Example for a circle with a radius of 3 cm:

A = pi * r^2

A = 3.14 * 9

A = 28.26 square centimeters

http://www.1728.com/diamform.htm

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