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OpenStudy (anonymous):
How do I find the radius of a quarter circle? The perimeter is 14.28.
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OpenStudy (anonymous):
r≈2.27
OpenStudy (anonymous):
the radius is 2.27 ,
OpenStudy (anonymous):
How did you do it?
OpenStudy (anonymous):
Or what is the formula? I could figure it out from there.
OpenStudy (anonymous):
\[2\pi r\]
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OpenStudy (anonymous):
|dw:1400680383706:dw| \[2 r+\frac{ 2 \pi r }{ 4 }= 14.28\]
OpenStudy (anonymous):
Cool, thnx.
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