The bottom cube has an edge of 9 cm. calculated the volume of the upper cube if each cube has an edge 2 cm shorter.

To calculate the volume of the top cube, we first need to calculate its edge.

If the problem statement says that the edge of the lower cube is 9 cm, and the edge of the upper cube is 2 cm shorter, then we need.

9 – 2 = 7.

Now let’s calculate the volume of this cube.

To do this, you need to multiply one edge by another and multiply by another.

1) 7 * 7 = 49;

2) 49 * 7 = 343.

Answer: The volume of the upper cube is 343.