MathematicsIf the perimeter of one face of a cube is 20cm, then find the surface area.

If the perimeter of one face of a cube is $20 cm$ , then find the surface area.

Given that, the perimeter of one face of the cube = 20cm.
Perimeter of one face of a cube be,

4 a = 20

a = 5

cm

The surface area of a cube

= 6 a^{2}

= 6 \times 5 \times 5

= 150 c m^{2}

Therefore, option 2 is correct.

JEE