Solve for R
R = \frac{36}{\pi} \approx 11.459155903
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2\pi R=72
The equation is in standard form.
\frac{2\pi R}{2\pi }=\frac{72}{2\pi }
Divide both sides by 2\pi .
R=\frac{72}{2\pi }
Dividing by 2\pi undoes the multiplication by 2\pi .
R=\frac{36}{\pi }
Divide 72 by 2\pi .
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