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:
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