Evaluate
\frac{128\pi }{3}\approx 134.041286553
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\frac{4}{3}\pi \times 4^{\frac{5}{2}}
Multiply 2 and \frac{2}{3} to get \frac{4}{3}.
\frac{4}{3}\pi \times 32
Calculate 4 to the power of \frac{5}{2} and get 32.
\frac{128}{3}\pi
Multiply \frac{4}{3} and 32 to get \frac{128}{3}.
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