Question

What is pi (sic)?

Answer 1

"pi", usually written as the Greek letter `(pi)`, is the ratio of the circumference of any circle to its diameter. It is one of the most common real constants in all of mathermatics.

Explanation:

Consider any circle of diameter `(D)` and circumfenence `(C)`

Then `pi = C/D` It can be proved that `pi` is a constant for any circle.

`pi approx 3.14159265` (to 8 decimal places)

`pi` is irrational (i.e. cannot be expressed as a fraction: `p/q :p,q in ZZ`)

`pi` is also transcendental (i.e. is not the root of any polynomial equation with rational coefficients)

`pi` is one of the most common real constants in all of mathematics.