Question

The total surface area of a cube is 150 cm^2. Find tge perimeter of any one of its faces.

Answer 1

TSA of cube = 150
=> 6a^2 = 150
=> a^2 = 25
=> a = 5 cm

Edge of cube = 5 cm

Perimeter of one face = 4 * 5
= 20 cm

Answer 2

TSA of cube = 6a square
150/6 = a square
√25 = a
a = 5 cm

perimeter of one face = 4*5 = 20 cm