c)Ifthe volume ofa cube is 3V3л░ли then total surface area of the

1.	c)Ifthe volume ofa cube is 3V3л░ли then total surface area of the cube isi) 6a2ii) 18a2iv) 18v3ad) The arithmetic mean of numbers 5,10,15,22,20,35 and 40 will be
Answer» Volume of cube = 3sqrt(3)a^3 Let side length of cube be s Then, volume of cube= s^3 Hence,s^3 = (3)^3/2a^3s = sqrt(3)a Surface area of cube= 6s^2= 6(sqrt(3)a)^2= 63a^2= 18a^2 (c) is correct option

c)Ifthe volume ofa cube is 3V3л░ли then total surface area of the cube isi) 6a2ii) 18a2iv) 18v3ad) The arithmetic mean of numbers 5,10,15,22,20,35 and 40 will be

Answer»

Volume of cube = 3sqrt(3)a^3

Let side length of cube be s

Then, volume of cube= s^3

Hence,s^3 = (3)^3/2*a^3s = sqrt(3)a

Surface area of cube= 6s^2= 6(sqrt(3)a)^2= 6*3a^2= 18a^2