Evaluate
49\pi \approx 153.938040026
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\frac{\pi \times 196\times 90}{360}
Multiply 14 and 14 to get 196.
\frac{\pi \times 17640}{360}
Multiply 196 and 90 to get 17640.
\pi \times 49
Divide \pi \times 17640 by 360 to get \pi \times 49.
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