User:AdrianG50/sandbox

Definition of Pi

Pi is the name of a Greek character which refers to a well known number that features in many geometric equations and is as fundamental as the elements that make up our human existence. The Greek character is generally displayed as " π ".

The number is a non-recurring number of unknown length of decimal places but starts with 3.14159. In most cases 4 or 5 decimal places is sufficient for general calculations. It can be found on most electronic calculators and all computers.

Derivation

In a any given circle, the distance around the circumference is represented as C   the distance across the diameter is represented as D then  π = C / D

Wikipedia Reference

Arc length

External Reference