The formula in solving the area of a square is Area = a² where "a" is for the length of the side. The area formula in solving a cube is Area = 6a² where "a" is for the length of its side. Area of square = a² 64 = a² a = 8 units
Area of cube = 6a² 64= 6a² a = 3.27 units
The difference of side of the square and side of the cube is shown below: Difference = 8 - 3.27 Difference = 4.73 units.
To maximize area and minimize perimeter we make the dimensions as close to equal as possible. Since we only need fencing on 3 sides, 120/3 = 40; we can use 40 for each side.
