Question

Justify pie is a irrational number?

Answer 1

Proof that π is irrational. In the 18th century, Johann Heinrich Lambert proved that the number π (pi) is irrational: that is, it cannot be expressed as a fraction a/b, where a is an integer and b is a non-zero integer.

Answer 2

yes, pie is a irrational number because actual value of a pie is 3.14...
It's non termination non repetation decimal 22/7 is the estimate value of pie.