Mensuration

1. Total small cubes = .
2. Completely invisible cubes = The inner .

1. The given cube has a side length of cm.
2. It is divided into smaller cubes of cm side.
- Number of small cubes along one edge = .
- Total number of smaller cubes = .
3. Small cubes with only one painted face are the cubes on the faces but not on edges or corners.
- Each face has a inner region where cubes have one face painted.
- Number of such cubes per face = .
- Total for all 6 faces = .
Thus, the number of cubes with only one painted face is 36.