8. Find the edge and ratio of surface areas

A solid cube of edge 4 $cm$ is cut into eight cubes of equal volume. What will be the edge of the small cube? Also, find the ratio between the surface area of a big cube and small cube.

 

Edge of the small cube $=$  $cm$

 

Ratio between the surface area of a big cube and small cube $=$ 1234$:$ 4212