Question

the volume of a cube is 729cm. find its surface area

Answer 1

Volume = a3

a3 = 729
a = 9cm



So surface area = 6a2 = 6*9*9
= 81*6 = 486cm2

Answer 2

Given 
Volume of cub= 729 cm^3
To find the surface area of the cube.
V=a^3
a=V^1/3
a=729^1/3
a=9 cm

Surface area of the cube= 6a^2
                                       =>6 *(9*9)
                                       =>6 * 81
                                       =>486 cm^2
Therefore the surface are of the the cube with volume 729 cm^3 is 486cm^2.