Explanation:
You do Length x width x height right Prism
Prism or Cylinder = A is the area of the base x h the height.
Cube = s is the length of the side. V = s powered by 3
Prymid or cone = A is the area of the base, h the height. V = 1/3Ah
Sphere = V = 4/3 πr powered by 3
This is all the volume I could remeber.
Sorry if it is not you what you are asking