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Mathematics 22 Online
OpenStudy (anonymous):

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OpenStudy (phi):

to find the circumference of the circle, you first need to find its radius. Then use C= 2 pi r

OpenStudy (anonymous):

oh, that's the formula? Thank you :)

OpenStudy (phi):

to find the radius, draw this picture: |dw:1389191198023:dw|

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