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81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.
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Is 28 squared rational or irrational?
28 squared is 784 which is a rational number
Is 4 over 9 squared rational or irrational?
Any number that can be written as a fraction is rational -- therefore, 4/9 squared is rational (it can still be written as a fraction even if you multiply it by itself).
Is 20 rational or irrational?
20 squared is 400 which is a rational number
Is pi squared rational?
No because pi still remains as an irrational when squared.
IS 0.4 squared an irrational number?
The square of any rational number is also rational.
Is 3 squared a rational or irrational?
It is a rational number as 9
Is 64 squared rational or irrational?
Rational
Is 28 squared rational or irrational?
28 squared is 784 which is a rational number
Is 4 over 9 squared rational or irrational?
Any number that can be written as a fraction is rational -- therefore, 4/9 squared is rational (it can still be written as a fraction even if you multiply it by itself).
Is 20 squared rational or irrational?
20 squared is 400 which is a rational number
Is 29 squared a rational or irrational number?
Rational.
Is 67 squared a rational or irrational number?
Rational.
Is 6 squared rational or irrational?
Rational; 62 = 36. Any rational number that is squared is still rational.
Is 14 squared irrational?
No, it is rational.
Is 289 squared irrational?
No, it is rational.
Is the square root of 3 squared rational or irrational?
They are rational.
Is the square of an irrational number rational?
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.
