Solution :
The surface area of the cube with the edge a is 6a^2
The surface area of the cube with the edge 4 is 64^2=6×16=96 cm2 .
Question : The total surface area of a closed cube is 128 cm2 more than the area of a square. If the length of each side of the cube is 8 cm, then what is the length of each side of the square?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile