8-4 Circumference and Area of a Circle

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					    8-4 Circumferences and Areas of Circles

Obj: To find the circumference and area of a circle.

KEY TERMS:

Circumference – the distance around a circle. Think about
circumference as the perimeter of a circle.

Pi ( ) – the greek letter that represents the ratio of a circle’s
circumference to its diameter.

FORMULA FOR CIRCUMFERENCE OF A CIRCLE:



FORMULA FOR AREA OF A CIRCLE:

                       2,   where r is the radius of a circle

				
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posted:2/26/2010
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