The mathematical constant π (pi) is an irrational number that represents the ratio of the circumference of a circle to its diameter. The value of pi is approximately equal to 3.14159265358979323846, but its decimal representation goes on infinitely without repeating.
Although, in practice, pi is often approximated to a certain number of decimal places (such as 3.14 or 22/7), its exact value cannot be expressed as a finite decimal or fraction. Therefore, it is commonly represented using the Greek letter "π" and used in mathematical calculations and formulas related to circles, spheres, and other curved geometries.
