Question

4. Find the edge of the cube whose total surface area is 432 cm ^ 2 . *​

Answer 1

let the edge of the cube =a m

surface area = 6a² m²---(1)

surface area = 432 m²----(2)

(1)= (2)

6a²=432

a²=432/6

a²=72

a =√72

a = 6√2 m