The maximum volume of a cube is
2× 2× 2 = 8 cubic centimeters
Long ones can be cut.
1 1 ÷ 2 = 5
The width can be cut.
6 ÷ 2 = 3
Tall ones can be cut off.
2 ÷ 2 = 1
You can cut it out at most.
5× 3× 1 = 15