NOTE:
AREA: Use the lateral surface area formula for the Right Circular Cone. If the shell is very thin this lateral surface area is very close the surface area of the Half Conical Shell. If it is not thin, calculate the surface area of half a Right Circular Cone(lateral + base) using the outer radius of the base circle. Then add the lateral surface area of a Right Circular Cone minus the area of the base (lateral - base) using the inner radius.

VOLUME: Use the Volume formula for a Right Circular Cone. Subtract the volume calculated by using the inner radius from the volume calculated by using the outer radius. Then divide by 2.

is the mass of the entire body.
is the density of the body.
is the outer radius of the body.