Evaluate
\frac{3\pi }{400}\approx 0.023561945
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\frac{3\times \frac{1}{100}\pi }{4}
Calculate 10 to the power of -2 and get \frac{1}{100}.
\frac{\frac{3}{100}\pi }{4}
Multiply 3 and \frac{1}{100} to get \frac{3}{100}.
\frac{3}{400}\pi
Divide \frac{3}{100}\pi by 4 to get \frac{3}{400}\pi .
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