I have a question that seens obvious, but I know the answer can't be that simple.
What happens to the volume and surface area when all sides of a cube is multiplied by 7?
At first I assumed that both the surface area and volume would just be multiplied by 7, but I know that isn't the case. Any help is appreciated, thanks.
EDIT: Fixed question to be more clear.
Let the side of the cube be $a$. Multiplying each dimension by $7$ gives a cube $7a \times 7a \times 7a$ The original volume was $a^3$ and the new volume is $(7a)^3$, so it gets multiplied by $7^3$. The surface area of the original cube is $6a^2$, so if you multiply the side by $7$ the area gets multiplied by ????