
Happy Pi Day
What is Pi Day?
It’s celebrated on March 14, in honor of the number itself, which rounds up to about 3.14159.
I’m bad at math. What is Pi?
Pi is the ratio of the circumference of a circle to its diameter. It’s rounded up because the actual ratio has been calculated to over one trillion digits beyond the decimal point (which sounds like fun to read while swiping on a phone). The symbol for Pi (π) was first used in 1737 by Swiss mathematician Leonhard Euler.
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