# Interesting Ways to Find the value of Pi [closed]

Is there any interesting ways to find pi?

Thanks.

## closed as too broad by zz20s, 3SAT, user147263, Daniel Fischer♦Mar 11 '16 at 22:16

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$$\pi = \sqrt{6(1 + \frac 1{2^2} + \frac 1{3^2} + \frac 1{4^2} + \frac 1{5^2}...)}$$