The volume of a cone that fits exactly inside a cylinder is 20 cubic feet. What is the volume of the cylinder? (5 points) Select one:

a. 4 cubic feet
b. 5 cubic feet
c. 40 cubic feet
d. 60 cubic feet
IDK WHAT TO DO!!!

2 answers

You need to know your cones.

The volume of a cone is 1/3 the volume of the cylinder it would be enclosed in.

Vcone=1/2 PI*radius^2 * height

It is more broad than that. The volume of any right Pyramid (including cones) is 1/3 the volume of the right prism that encloses it.
VolumePyramid= 1/3 basearea*height

Math is really awesome.
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