Evaluate
\frac{32004\pi }{5}\approx 20108.706257098
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0.508\pi \times 210\times 60
Multiply 0.254 and 2 to get 0.508.
106.68\pi \times 60
Multiply 0.508 and 210 to get 106.68.
6400.8\pi
Multiply 106.68 and 60 to get 6400.8.
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