Question

If the yolume of a cabe is 729 cm', then its surface area will be??​

Answer 1

Let a be the side of the cube.

Volume of cube = 729 cm³

a³ = 729

a =  ∛729

a = 9 cm

CSA of cube = 4a²

                     = 4 × 9 × 9

                    = 324 cm²

TSA of cube = 6a²

                     = 6 × 9 × 9

                    = 486 cm²