Evaluate
\frac{64\pi }{3}\approx 67.020643277
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\pi \times \frac{40}{3}+\pi \times 24\times \frac{1}{3}
Multiply 40 and \frac{1}{3} to get \frac{40}{3}.
\pi \times \frac{40}{3}+\pi \times \frac{24}{3}
Multiply 24 and \frac{1}{3} to get \frac{24}{3}.
\pi \times \frac{40}{3}+\pi \times 8
Divide 24 by 3 to get 8.
\frac{64}{3}\pi
Combine \pi \times \frac{40}{3} and \pi \times 8 to get \frac{64}{3}\pi .
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