Determine if square root of, 81, end square root

Question

81
​
is rational or irrational and give a reason for your answer.
Answer
Attempt 1 out of 2

The number square root of, 81, end square root
81
​
is
because

Answer 1

The square root of 81 is 9, since \(9 \times 9 = 81\).

The number \(9\) is a rational number because it can be expressed as the fraction \(\frac{9}{1}\), where both 9 and 1 are integers.

Therefore, the number \(\sqrt{81}\) is rational because it is a whole number.