That's really hard homework I really have never seen anything like that but I'll ask my sister.
Answer:
280.6 repeating
Step-by-step explanation:
I attached an image of how to do the division. It is kind of difficult to explain like this.
1.a sphere with a radius of three units
By definition, the volume of a sphere is:

Substituting values we have:

Rewriting we have:
2.a cone with a diameter of twelve units and a height of three units
By definition, the volume of a cone is given by:

Substituting values we have:

Rewriting we have: