Evaluate
20\pi \approx 62.831853072
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100\pi \times \frac{1}{5}
Reduce the fraction \frac{72}{360} to lowest terms by extracting and canceling out 72.
\frac{100}{5}\pi
Multiply 100 and \frac{1}{5} to get \frac{100}{5}.
20\pi
Divide 100 by 5 to get 20.
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