Thursday, June 14, 2012

Circumference, Area and Sectors

Exam Review
Know the ratio of the circumference to diameter of any circles always the same. 

Circumference divided by the diameter = 3.14

Area is the measure of space a 2 dimensional shape covers.

Sectors of circle graphs are made from central angles.

If the sector covers 25% of the graph the central angle is 25% of 360 degrees which is 90 degrees.

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