Square panel has an area of 225 find the dimension of the piano

15 units by 15 units

Step-by-step explanation:

Recall that the formula for the area of a square is A = s^2, where s is the length of one side.

Here, A = s^2 = 225 units^2.

Taking the sqrt of both sides, we get s = + 15 units.

Thus, the panel here is 15 units long and 15 units wide.