1. ## cube

How many rectangular cuboids are required to form a cube with least possible dimensions when the rectangle cuboid is of dimensions 7X6X3?
A. 14
B. 42
C. 126

my answer is 126(1*1*1) like this is it correct

2. are empty spaces allowed in the cube's interior?

the cuboid volume is 126, none of the answers gives a total volume that can be express as $V=l^3$, for l integer.

3. Hint: 588/42 = 14