Question

The perimeter of one face of a cube is 20cm.Its total surface area is:
A: 2400cm2
B: 150cm2
C: 120cm2 D: 96cm2

Answer 1

Step-by-step explanation:

4a = 20 cm

then total surface area of cube is 6a^2

a= 5cm

total surface area of cube = 150 cm^2 so option b is right