Evaluate
\frac{81\pi }{2}\approx 127.23450247
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\frac{1}{3}\pi \times 20.25\times 6
Calculate 4.5 to the power of 2 and get 20.25.
\frac{1}{3}\pi \times \frac{81}{4}\times 6
Convert decimal number 20.25 to fraction \frac{2025}{100}. Reduce the fraction \frac{2025}{100} to lowest terms by extracting and canceling out 25.
\frac{1\times 81}{3\times 4}\pi \times 6
Multiply \frac{1}{3} times \frac{81}{4} by multiplying numerator times numerator and denominator times denominator.
\frac{81}{12}\pi \times 6
Do the multiplications in the fraction \frac{1\times 81}{3\times 4}.
\frac{27}{4}\pi \times 6
Reduce the fraction \frac{81}{12} to lowest terms by extracting and canceling out 3.
\frac{27\times 6}{4}\pi
Express \frac{27}{4}\times 6 as a single fraction.
\frac{162}{4}\pi
Multiply 27 and 6 to get 162.
\frac{81}{2}\pi
Reduce the fraction \frac{162}{4} to lowest terms by extracting and canceling out 2.
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