Question

1] find the edge of the cube whose surface area is 432 m square.

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

Answer 2

Let surface area =A

A= 6a2

a=√A/6

a=√432/6

a=8.49