Evaluate
\frac{13000000000}{\pi }\approx 4138028520.389278889
Expand
\frac{13000000000}{\pi} = 4138028520.389279
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\frac{0.325}{\pi \times \left(5\times 10^{-6}\right)^{2}}
Multiply 0.5 and 0.65 to get 0.325.
\frac{0.325}{\pi \times \left(5\times \frac{1}{1000000}\right)^{2}}
Calculate 10 to the power of -6 and get \frac{1}{1000000}.
\frac{0.325}{\pi \times \left(\frac{1}{200000}\right)^{2}}
Multiply 5 and \frac{1}{1000000} to get \frac{1}{200000}.
\frac{0.325}{\pi \times \frac{1}{40000000000}}
Calculate \frac{1}{200000} to the power of 2 and get \frac{1}{40000000000}.
\frac{0.325}{\pi \times \left(5\times 10^{-6}\right)^{2}}
Multiply 0.5 and 0.65 to get 0.325.
\frac{0.325}{\pi \times \left(5\times \frac{1}{1000000}\right)^{2}}
Calculate 10 to the power of -6 and get \frac{1}{1000000}.
\frac{0.325}{\pi \times \left(\frac{1}{200000}\right)^{2}}
Multiply 5 and \frac{1}{1000000} to get \frac{1}{200000}.
\frac{0.325}{\pi \times \frac{1}{40000000000}}
Calculate \frac{1}{200000} to the power of 2 and get \frac{1}{40000000000}.
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