#picoins Pi (π) is a mathematical constant representing the ratio of a circle's circumference to its diameter. It's approximately equal to 3.14159, but it's an irrational number, which means it can't be expressed exactly as a finite decimal or fraction.

Pi is used in various mathematical formulas, particularly in geometry and trigonometry, to calculate areas, circumferences, and volumes of circles, spheres, and other curved shapes.

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