20 squared is not an irrational number. 202 = 400.
well square root of 25 = 5 if you squar 5 you get an irrational number = ~2.236067977
Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.
Any number that can't be expressed as a fraction is an irrational number.
22=4, so no, it's not an irrational number.
No because 7 squared equals 49 which is a rational number but the square root of 7 is an irrational number
Because it has no number that can be squared to make it.
20 squared is 400 which is a rational number
No because 102 squared is 10404 which is a rational number
No because 25 is a rational number