If the edges of two cubes are in the ratio 3 to 1, what is the ratio of their total surface areas?

Explanation

Given the edge lengths ratio of 3:1, the surface area ratio is the square of the edge ratio. Since surface area of a cube is 6 times the square of its edge, the ratio becomes 6 × 3² : 6 × 1², which simplifies to 9:1.