Writing in math: Explain how you will find the length of one side of a square if the area is 16 square units.

To find the length of one side of a square when given the area, you can use the formula for the area of a square, which is side^2 = area. In this case, if the area is 16 square units, you would set up the equation:

side^2 = 16

Next, you would take the square root of both sides to solve for the length of one side:

√side^2 = √16
side = 4

Therefore, the length of one side of the square is 4 units.