Evaluate
\frac{2299\pi }{125}\approx 57.780172085
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100\pi \times 0.0000038\times 220^{2}
Multiply 2 and 50 to get 100.
0.00038\pi \times 220^{2}
Multiply 100 and 0.0000038 to get 0.00038.
0.00038\pi \times 48400
Calculate 220 to the power of 2 and get 48400.
18.392\pi
Multiply 0.00038 and 48400 to get 18.392.
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