Answer :
If a solid cube is broken into 4 small cubes,then its surface area will increase
Surface area of a cube = 6x leanthx leanth - [1 solid cube]
= 4 x 6x leanthx leanth -[4 small cubes]
Surface area of a cube = 6x leanthx leanth - [1 solid cube]
= 4 x 6x leanthx leanth -[4 small cubes]