A top is in the form of a cone placed on a hemisphere, such that the radius of the cone and the hemisphere are the same. The height of the cone part is 8 cm and slant height is 10 cm. If this solid is melted and cast into a cylinder of the same height as that of the top, and the volume of the cylinder is K π cc, then the value of K is: (where cc = cubic centimeter)
1
240
2
360
3
480
4
120