Evaluate
150\pi \approx 471.238898038
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400\pi \times \frac{3}{8}
Reduce the fraction \frac{135}{360} to lowest terms by extracting and canceling out 45.
\frac{400\times 3}{8}\pi
Express 400\times \frac{3}{8} as a single fraction.
\frac{1200}{8}\pi
Multiply 400 and 3 to get 1200.
150\pi
Divide 1200 by 8 to get 150.
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