Evaluate
\frac{8580\pi ^{2}}{7}\approx 12097.315108764
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\frac{390\pi }{7}\times 22\pi
Cancel out 3 and 3.
\frac{390\pi \times 22}{7}\pi
Express \frac{390\pi }{7}\times 22 as a single fraction.
\frac{390\pi \times 22\pi }{7}
Express \frac{390\pi \times 22}{7}\pi as a single fraction.
\frac{390\pi ^{2}\times 22}{7}
Multiply \pi and \pi to get \pi ^{2}.
\frac{8580\pi ^{2}}{7}
Multiply 390 and 22 to get 8580.
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