What is the volume of a cube with a side length of 3 units?

To find the volume of a cube, you use the formula for volume, which is the length of one side cubed (side length × side length × side length). In this case, the side length of the cube is 3 units.

So, you calculate the volume as follows:

Volume = side length × side length × side length

Volume = 3 × 3 × 3

Volume = 27 cubic units.

Since 27 is the result of the calculation, this confirms that the corresponding choice accurately represents the volume of the cube with a side length of 3 units.