Evaluate
\frac{153\pi }{20}\approx 24.0331838
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0.0425\pi \times 0.05\times 3600
Multiply 0.85 and 0.05 to get 0.0425.
0.002125\pi \times 3600
Multiply 0.0425 and 0.05 to get 0.002125.
7.65\pi
Multiply 0.002125 and 3600 to get 7.65.
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