Evaluate
5\pi \approx 15.707963268
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\frac{3}{2}\pi +\frac{3}{2}\pi +2\pi
Combine \frac{\pi }{2} and \pi to get \frac{3}{2}\pi .
3\pi +2\pi
Combine \frac{3}{2}\pi and \frac{3}{2}\pi to get 3\pi .
5\pi
Combine 3\pi and 2\pi to get 5\pi .
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