Final answer:
To find the length of a side of a cube with a volume of 216, take the cube root of the volume. The formula V = s³ leads us to calculate s = √(216), which simplifies to s = 6. Therefore, the side length is 6 units.
Step-by-step explanation:
To determine the length of a side of a cube (s) when given its volume (V), you would use the formula for the volume of a cube, which is V = s³. Since the volume is given as 216 cubic units, you would take the cube root of the volume to find the length of a side, resulting in the expression s = √(216).
To calculate the side length from the given volume of 216, you take the cube root of 216, which yields s = 6. Therefore, the length of a side of Julie's jewelry box is 6 units.