March 14th is Pi Day as the date 3/14 corresponds to the mathematical number pi.
The mathematical constant π is a transcendental (and therefore irrational) real number, approximately equal to 3.14159, which is the ratio of a circle's circumference to its diameter in Euclidean geometry, and has many uses in mathematics, physics, and engineering. It is also known as Archimedes' constant and as Ludolph's number
Here are the first 100 digits of PI
3.
1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651
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