Question

check the wheather 81 is a square numberब​

Answer 1

• We have to evaluate the above expression by using the given data.

             Given data:- $81$ is a square of a number.

             To find:- Value of the expression.

             Solution:-

• We know that a number multiplied by itself is known as the square of a number.

        Thus, we get

        $\sqrt{81} =9\\9\times9=81.\\9^{2} =81.$

      Hence we will get, $81$ is a square number of $9.$