Question

The premiter of one face of a cube is 20 cm . Find the total area of six faces​

Answer 1

Answer:

150 cm²

Step-by-step explanation:

We know , every face of cube is a square

Let the edge of the cube be 'a'

So , given , 4a = 20cm

a = 5cm

Total area = 6a² = 6*5² = 150 cm²

Answer 2

Answer:

The area of six faces is 150 cm²

Step-by-step explanation:

Given perimeter of one face of cube is 20 cm

As we know face of cube is a square.

And perimeter of square = 4a (if side of square is )

20 cm = 4a

Divide both sides by 4

(20/4) cm = a

a= 5 cm

Area of one face = a²

Area of six faces = 6a² = 6 x (5)² = 6 x 25 = 150 cm²