Look at the adjacent figure. Find the number of unit cubes in cube A and cube B and find the ratio.
There is only one unit cube in A. In figure B, by drawing parallel lines to all side, let us divide it into unit cubes and count. There are two layers, and each layer has 4 unit cubes. So number of unit cubes in $$B = 8$$ Ratio of unit cube in A and B $$= 1 : 8$$.