If the length of each edge of a cube is doubled, by how many times does its volume and surface area increase?
Let the length of each edge of a cube be 'a'
Surface area of cube ( S ) =
Volume of cube ( V ) =
If the length of each edge of the cube is doubled,
Then, surface area of new cube =
Volume of new cube =
Therefore, by doubling each edge of a cube total surface area is increase by 4 times and volume is increased by 8 times.