It is 15.
Yes, 225 squared is a rational number.
28 squared is 784 which is a rational number
Rational; 62 = 36. Any rational number that is squared is still rational.
Yes, 225 squared is a rational number.
20 squared is 400 which is a rational number
Yep, any rational number squared is also rational.
Rational
Rational.
Rational.
no
The square of any rational number is also rational.