Answer:
The square root of a number is a value that, when multiplied by itself, gives the original number. So, the square root of 0.0081 is a value that, when multiplied by itself, gives 0.0081.
Explanation:
In mathematics, there can be two square roots for any positive number, one positive and one negative. So, for the positive square root of 0.0081, we get 0.09, and for the negative square root of 0.0081, we get -0.09.
Therefore, both 0.09 and -0.09 are square roots of 0.0081.