Evaluate
16\pi \approx 50.265482457
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\frac{1}{9}\pi \times 12^{2}
Reduce the fraction \frac{40}{360} to lowest terms by extracting and canceling out 40.
\frac{1}{9}\pi \times 144
Calculate 12 to the power of 2 and get 144.
\frac{144}{9}\pi
Multiply \frac{1}{9} and 144 to get \frac{144}{9}.
16\pi
Divide 144 by 9 to get 16.
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