What is the volume of a cube whose surface area is 54 cm2?

28 cm3 3 cm3 27 cm3 9 cm3

27 cm3

We know that, Surface area of cube = 6a2  Volume of cube = a3  We have, Surface area of cube = 54 cm2  Now, Surface Area = = 54 = 6a2  = a2 = 546 = a2 = 9 = a = 3 cm Now volume of cube = (3)3 = 27 cm3