Evaluate
\frac{32000\pi }{3}\approx 33510.321638291
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4\pi \times \frac{8000}{3}
Calculate 20 to the power of 3 and get 8000.
\frac{4\times 8000}{3}\pi
Express 4\times \frac{8000}{3} as a single fraction.
\frac{32000}{3}\pi
Multiply 4 and 8000 to get 32000.
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