Question

find the surface area of a cube whose volume is 729 M cube

Answer 1

HERE IS THE ANSWER;

Vol.of a cube = Side ^3

729=side^3

=>Side =9m.

SA of cube is 6×side^2

=>6×9×9=SA

=>SA=81×6

=486m^2

HOPE it helps

Answer 2

Heya ☺

Given that

Volume of a cube = 729m^3

Side = ?

Surface area = ?

Solution

Let the side of a cube be (x)m.Then,

Volume of a cube = (Side)^3

=> 729 = (x)^3

=> x = 3√729

=> x = 9

Hence , the side of the cube is 9m.

Surface area of a cube = 6 (length)^2

= 6 × (9)^2

= 6 × 81

= 486m^2

Thanks