The first person to answer this correctly with an explanation gets Brainiest. (your comment will get reported if you only answer for points)

Answer:
Step-by-step explanation:
Volume of a cylinder is
[tex]V= \pi r^{2} h[/tex]
[tex]v= 3^{2} (4)\pi \\v- 9*4\pi \\v=36\pi[/tex]
Volume of a cone is
[tex]\pi r^{2} (\frac{h}{3)}[/tex]
[tex]v= 3^{2} (\frac{12}{3}) \pi \\v= 9* 4\pi \\v=36\pi[/tex]