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January 31, 2015

January 31, 2015

Posted by **Courtney** on Sunday, April 15, 2012 at 6:18pm.

- Geometry -
**Bosnian**, Sunday, April 15, 2012 at 6:24pmThe circumference of the circle = 2 r pi

The measure of the sector 90 ° = ( 1 / 4 ) 2 r pi = r pi / 2

r pi / 2 = 3 pi Divide both sides by pi

r / 2 = 3 Multiply both sides by 2

r = 2 * 3

r = 6 cm

- Geometry -
**Courtney**, Sunday, April 15, 2012 at 6:26pmThanks so much!

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