Answer parts c and d. show working as well.

The volume of each spherical ball is
523.6 cm^3

and the volume of the box is 60,000 cm^3

a) the answer is 60

in each 10 cm of the rectangular prism you can place one sphere. so the answer of a is (4*3*5)

b) the answer is 30

c) the answer is 31,416


d) 31,416 is 52.36% of 60,000

so the percentage of empty space is

100 - 52= 48%

good luck