The surface area of a cube is computed as: 6*A, where A is the area of each of the 6 sides. So we know that each of the sides has an area of 600/6 = 100 cm^2 The area of the sides of the cube is A_side = s^2 where s is the side length. So the side length is the square root of 100 cm^2 s = sqrt(100cm^2) = 10cm. This means the side length is 10 cm.
