Is there anyway of breaking up the parts of an a round spherical bottomed cone into a regular cone and a hemisphere? I can find the CM of a cone with its tip on the origin, and a hemisphere with its flat bottom in the x-y plane. Can I break the round bottomed cone up into these 2 parts? How would I go about combining them to find the CM of the round bottomed cone? The z-axis goes though the centre of the round bottomed cone lengthways.