x=10
\frac{4}{\:x}\sum _{n=1}^x\:\sqrt{1-\left(\frac{n}{x}\right)^2}
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x=10
\frac{4}{\:x}\sum _{n=1}^x\:\sqrt{1-\left(\frac{n}{x}\right)^2}
MathBot Answer:
MathBot is working on a solution to your problem.