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October 21, 2014

October 21, 2014

Posted by **greeny** on Tuesday, October 2, 2012 at 9:09pm.

- pprecalc -
**Steve**, Wednesday, October 3, 2012 at 11:24ama sector of angle θ in a circle of radius r is 1/2 r^2 θ

110° = 110/180 pi = 1.92

20 * 1.92^2 = 38.4

(20-16)* 1.92^2 = 7.7

38.4-7.7 = 30.7 in^2

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