Answer:
3 cones are required to fill the cylinder.
Vcyl =
and Vcone = 
The volume of cylinder is 3 times the volume of cone having same base and height.
Step-by-step explanation:
Consider the provided information.
Now we need to find the number cones to fill the cylinder.
The volume of a cone is:

The volume of cylinder is:

To find the the number cones to fill the cylinder simply divide the volume of cylinder by volume of cone as shown:

Hence 3 cones are required to fill the cylinder.
The formula for the volume of each shape is:
Vcyl =
and Vcone = 
The relationship between the volume of the cylinder and the volume of the cone is: The volume of the cone is 1/3 of a cylinder that has the same base and height or the volume of cylinder is 3 times the volume of cone having same base and height.