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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Thursday, March 22, 2012 at 8:50am.

revolutions

- math -
**Reiny**, Thursday, March 22, 2012 at 10:11amI rotation = 1 circumference = 2π(30) = 60π

So 4 rotations would be 240π cm

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