Pi (π) represents the ratio of a circle's circumference to its diameter. In simpler terms, it's a constant value (approximately 3.14159) used to calculate the area, circumference, and other properties of circles.

In the 3rd century BC, Archimedes used inscribed and circumscribed polygons to calculate pi with remarkable accuracy.

From calculating the area of a pizza to engineering bridges and space rockets, pi plays a crucial role in various fields like physics, etc.

Unlike most mathematical constants, pi has an infinite number of decimal places with no repeating pattern.

Schools hold memorization competitions, bakeries offer special pi-themed treats, and enthusiasts explore the endless applications of this captivating constant.