Evaluate
\frac{20}{\pi }\approx 6.366197724
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\frac{5\times 4}{\pi }
Divide 5 by \frac{\pi }{4} by multiplying 5 by the reciprocal of \frac{\pi }{4}.
\frac{20}{\pi }
Multiply 5 and 4 to get 20.
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