The volume of any cylinders is dependent on the height and the radius.

There are 24 cans of soda and they are arranged in 4 rows of 6. Each can has a radius of 4 cm and a height of 15 cm. These cans are to be packed snuggly into a case with no extra space on the top, bottom, or sides. Calculate how much empty space will not be occupied by a can in the box.