Evaluate
\frac{160\pi }{9}\approx 55.850536064
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\frac{1}{9}\times 2\pi \times 80
Reduce the fraction \frac{40}{360} to lowest terms by extracting and canceling out 40.
\frac{2}{9}\pi \times 80
Multiply \frac{1}{9} and 2 to get \frac{2}{9}.
\frac{2\times 80}{9}\pi
Express \frac{2}{9}\times 80 as a single fraction.
\frac{160}{9}\pi
Multiply 2 and 80 to get 160.
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Limits
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