question_answer

The volume of a cube is\[512\text{ }c{{m}^{3}}\]. After a smaller cube is out off from it, its volume is \[448\,c{{m}^{3}}\]. What is the length of each side of the smaller cube?

A)  \[6\,cm\]                           

B)  \[7\,cm\]           

C)         \[9\,cm\]           

D)         \[4\,cm\]