Evaluate
\frac{6375\pi }{4}\approx 5006.913291659
Expand
\frac{6375 \pi}{4} = 5006.913291658733
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\pi \times \frac{6400-25}{4}
Calculate 80 to the power of 2 and get 6400.
\pi \times \frac{6375}{4}
Subtract 25 from 6400 to get 6375.
\pi \times \frac{6400-25}{4}
Calculate 80 to the power of 2 and get 6400.
\pi \times \frac{6375}{4}
Subtract 25 from 6400 to get 6375.
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