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September 20, 2014

September 20, 2014

Posted by **Tri** on Thursday, February 12, 2009 at 12:55am.

My answer: 661.88 cm sqr

Answer: 55.2 cm sqr

Thanks.

- Precalculus -
**drwls**, Thursday, February 12, 2009 at 2:37am30 degrees is 1/12 of the pie.

The covered area is (1/2)pi R^2

You need to figure out R from the arc length.

30 degrees is pi/6 radians

The arc length is R*(pi/6) = 7.6

Therefore R = 14.51 cm

(1/2) pi R^2 = 55.2 cm^2

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