The the parallelogram is like:
Where h is the height, The area of this parallelogram is calculated as:
A = 24*h
If the Area is equal t 18 square units, the height h is:
18 = 24*h
Solving for h, we get:
18/24 = h
0.75 units = h
Answer: a possible parallelogram's height is 0.75 units