Explanation:
Because there is no information about the length of the cube
Hence, Let a is the length of the cube, we have: 
The total surface areas is calculate as:
A = 6
 
<=> A = 6
 square inches
The area of the shrink wrap will be used to wrap five game cubes is: 
= The area of one cube * 5 
= 6
 *5 = 30 
 
For example, the length of the cube is 3 inches 
=> The total surface areas is calculate as: 
A = 6
 = 6*
 = 54 square inches
The area of the shrink wrap will be used to wrap five game cubes is: 
54*5 = 270 square inches
Hope it will find you well.