Evaluate
\frac{25\pi }{2}\approx 39.26990817
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\frac{5\pi \times 10}{4}
Divide 5\pi by \frac{4}{10} by multiplying 5\pi by the reciprocal of \frac{4}{10}.
\frac{50\pi }{4}
Multiply 5 and 10 to get 50.
\frac{25}{2}\pi
Divide 50\pi by 4 to get \frac{25}{2}\pi .
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