Homonym: PI (Pie)
PI, or π, 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 simple fraction, and its decimal representation goes on forever without repeating. The value of π is approximately 3.14, but it has been calculated to trillions of digits beyond the decimal point.
π is widely used in various fields, including mathematics, physics, and engineering. It plays a crucial role in formulas related to circles, such as calculating the area and circumference. Understanding π is essential for anyone studying geometry or working with circular shapes.