A cubic metallic box having side of 10 cm encloses the largest possible sphere inside it. The remaining space in the box is filled with sand. What is the ratio of the volume of the sand inside the box to the volume of the metallic box?
1
(4 - π) ∶ 4
2
(6 - π) ∶ 6
3
(5 - π) ∶ 5
4
(8 - π) ∶ 8
5
None of these