Question

Two cubes have sides of length 4 cm and 2 cm. What is the ratio of their respective surface areas?

Answer 1

4:1

Explanation:

Surface area of 1st cube =

`6 {a}^(2)`

`6 * 4 {}^(2)`

`96`

Surface area of second cube =

`6 {a}^(2)`

`6 * {2}^(2)`

`24`

So, their ratio is

`(96)/(24)`

`(4)/(1)`

4:1