Beauty of Pi

Pi is the ratio of a circle’s circumference to it’s diameter. This ratio has been calculated to be approximately 3.141592653. An engineer designing a large circular building would not need a measurement any more accurate than that, but mathematicians have calculated Pi to billions of digits.

https://en.wikipedia.org/wiki/Pi

∏ (The symbol for Pi, may not display correctly in some browsers)

Website with many digits of pi in a beautiful layout. http://3.14.maxg.org/

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