Three.
Four.
Ignoring rotations, there are 3 distinct solutions.
4
There are many options: 2 rectangular prisms 2 cubes 2 parallelepipeds 2 tetrahedrons 2 square based pyramids are some possibilities using convex polyhedra.
Three.
Four.
2 prisms
Just one, although the orientation of the prism might vary.
6 i think
Ignoring rotations, there are 3 distinct solutions.
93
3
4
Oh, what a happy little question! With 18 unit cubes, you can create different rectangular prisms by arranging the cubes in various ways. Remember to explore different combinations and see how many unique rectangular prisms you can discover. Just have fun and let your imagination guide you on this creative journey!
The answer depends on the number. Note that the question does not require the solids to be in the form of cubiods (rectangular prisms).
Only one.