Evaluate
\frac{8\pi }{3}\approx 8.37758041
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\pi \times \frac{1}{45}\times 120
Divide \pi \times 4 by 180 to get \pi \times \frac{1}{45}.
\pi \times \frac{120}{45}
Multiply \frac{1}{45} and 120 to get \frac{120}{45}.
\pi \times \frac{8}{3}
Reduce the fraction \frac{120}{45} to lowest terms by extracting and canceling out 15.
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