Evaluate
2\pi \approx 6.283185307
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\frac{1}{4}\times 8\pi
Reduce the fraction \frac{90}{360} to lowest terms by extracting and canceling out 90.
\frac{8}{4}\pi
Multiply \frac{1}{4} and 8 to get \frac{8}{4}.
2\pi
Divide 8 by 4 to get 2.
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