The most well-known fact about pi—normally rounded to 3.14159—is that it represents the ratio of the circumference of a circle to its diameter. Pi is also an irrational number, so it is incapable of being written as a simple fraction. Therefore, pi is an infinitely long, non-repeating decimal, making it one of the most interesting and mysterious numbers known to man.
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Article by Medonista
Posted on August 19, 2018