Question

a cuboid has capacity of 729 kiloliter . it is melted and recast into a cube​

Answer 1

Let the side of a cube be a cm

As we know that

Volume of a cube with side a is a3

Given volume of a cube is 729 cm3

⟹a3=729

⟹a=9

Surface area of cube is 6a2=6×92=486 cm2