# Circle Ratio

## 01

A fixed number represented by π. The ratio of the circumference of a circle to its diameter. π is an irrational number and the approximation, 3.14, is often used. The concept of π has existed since around 2000 BC, and it has been calculated over the years. It is as follows (up to thirty decimal places): 3.14159 26535 89793 23846 26433 83279 50288...