Solve for r
r = \frac{300}{\pi} \approx 95.492965855
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\pi r=300
Swap sides so that all variable terms are on the left hand side.
\frac{\pi r}{\pi }=\frac{300}{\pi }
Divide both sides by \pi .
r=\frac{300}{\pi }
Dividing by \pi undoes the multiplication by \pi .
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