How many prisms can be made with 18 cubes?

To determine the number of prisms that can be made with 18 cubes, we need to consider the different dimensions of the prism. A prism requires at least 3 faces to form a solid shape. With 18 cubes, we can form prisms with dimensions of 1x1x18, 1x2x9, or 1x3x6. Therefore, there are 3 possible prisms that can be made with 18 cubes.