Cube side lengths are all the same. I'm guessing y is one of the sides. To get the surface area you do length X width X 6 (since there are 6 sides).firstly we need to divide 96 by 6. That is 16. Then we divide it by 2 because the length and width are the same. This is 8. The length of one side must be 8m.
The formula for finding the surface area of a cube is A=6y^2 where y is the side length. we know a=96. so we just isolate y. 96/6= 6y^2 / 6 16=y^2 sqrt (16) = sqrt(y^2) 4=y
