Evaluate
9\pi \approx 28.274333882
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\left(\frac{9}{6}\right)^{2}\times 4\pi
Multiply \frac{9}{6} and \frac{9}{6} to get \left(\frac{9}{6}\right)^{2}.
\left(\frac{3}{2}\right)^{2}\times 4\pi
Reduce the fraction \frac{9}{6} to lowest terms by extracting and canceling out 3.
\frac{9}{4}\times 4\pi
Calculate \frac{3}{2} to the power of 2 and get \frac{9}{4}.
9\pi
Cancel out 4 and 4.
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