How do I find the volume of a square

Volume is represented by the unit, cubed. If your unit is in inches then it would be "inches cubed". Multiply the length times the width times the height.

V=l*w*h = ___ units cubed

Since each side is the same, it can simply be the length of one side cubed.

Example: if a square has one side of 2 inches, the volume would be 2 * 2 * 2 * 2 inches or 8 cubric inches.