Question

if the diagonals if cube is 9root of 3cm long then its total surface area is

Answer 1

Answer: as we know that

(d)^2=(a)^2+(a)^2+(a)^2:

ATQ

(3)^2=3(a)^2

__9__=(a)^2

3

3=a^2

As we know that yaa of cube is 6(a)^2=6(3)=18cm^3