# Pi (π): Value of pi

## What is Pi (π)

The number π is the ratio between the circumference and the diameter on any given circle **and **always gives the same answer:

3.14159265358…

In any circle, dividing the circumference by the diameter is called ** Pi (π) **

It is known that π is not a rational number (quotient of two integers). Moreover, π is not algebraic over the rational number.

We can say that no polynomial with rational coefficients can have pi (π) as a root. Its irrationality means that its decimal expansion (or any integer base for that matter) is not finite nor periodic.

## Value of pi(π )

Over human history there were many attempts to calculate this number precisely. One of the

oldest approximation value of pi(π ) is given below:

**pi(π )= 3.14159265358…**

## Value of Pi (π) in Fractions

** Pi (π) = 22/7**