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August 20, 2014

August 20, 2014

Posted by **Anne** on Tuesday, December 7, 2010 at 9:20pm.

This problem has a big cirlce with 1/4 shadded with a radius of 20 cm.

the answer chocies are

A. 90 cm squared

B. 270 cm squared

C. 314 cm squared

D. 1.256 cm squared

how do I find the answer?

- Math question -
**Bob**, Tuesday, December 7, 2010 at 9:27pmpi*r^2

3.14*20cm.^2

=1256.63

take that and divide by four and you get 314.16

- Math question -
**Danny**, Tuesday, December 7, 2010 at 9:34pmI don't understand how you got 1256.63

- Math question -
**Anna**, Tuesday, December 7, 2010 at 9:37pmI don't either I got 62.8

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