Answer :
To do this we need to find all the pairs of factors of 18.
These are:
- 18 and 1
- 9 and 2
- 6 and 3
From this we can see there are 3 ways of making a rectangle from 18 cubes
These are:
- 18 and 1
- 9 and 2
- 6 and 3
From this we can see there are 3 ways of making a rectangle from 18 cubes