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What Is Pi, and Why Is It So Important?

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = ...
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Google sets new record for calculating pi — but what’s the point?

Developers have set a new record in the endless quest to accurately calculate pi. A team led by Google Cloud’s Emma Haruka Iwao found 100 TRILLION digits of the mathematical constant — smashing the ...