Question

Find the edge of a cube whose surface area is 432 m².

 

Answer 1

Let,

a → Edge of the cube

Surface area of the cube = 6a²

So,

`6a^2 = 432`

   `a^2 = 432/6`

        = 72

     ` a = 6 sqrt(2) ` m 

Side of the cube is `6 sqrt(2) ` m .