All you have to do is find the volume of the cylinder, then find the volume of the cone, and add their 2 volumes.
Volume of a cylinder: [tex] \frac{ \pi }{4} D^{2} h_{1} [/tex]
Where D is the diameter of the cylinder and h1 is the height of the cylinder
Volume of a cone: [tex] \frac{ \pi H_{2} d^{2} }{12} [/tex]
Where H2 is the height of the cone and d is the diameter of the cone
