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OpenStudy (anonymous):
Solve for r: C = 2pir. r = C over 2 pi r = 2 c all over pi r = C over pi r = pi times C all over 2
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OpenStudy (shamil98):
\[\huge C = 2{\pi}r\] \[\huge \frac{ C }{ 2{\pi} } = r\]
OpenStudy (anonymous):
so the answer is C. Thanks~
OpenStudy (shamil98):
The answer is A, that is C/2pi not C/pi lol
OpenStudy (anonymous):
Kayy Thanks!
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