Pi (Ο) is a mathematical constant that represents the ratio of a circle's circumference to its diameter. It is an irrational number, meaning it cannot be expressed as a finite decimal or a fraction. The value of Pi is approximately 3.14159, although it extends infinitely without repeating.
Pi is a fundamental constant in mathematics and appears in numerous mathematical formulas and equations. It has applications in various fields, including geometry, trigonometry, calculus, physics, and engineering.