Question

The volume of a cube is numerically equal
to sum of the length of its edges. The total
surface area of cube in square units is
(1) 72.0
(2) 64.5
(3) 12.4
(4) 44.2​

Answer 1

Answer:

1)72

Step-by-step explanation:

let the length of the cube be 'a'

volume of the cube =a^3

total no of edges in a cube is 12

sum of the length of the edges =12a

as it is given that

sum of the length of the edges = volume of the cube

i.e

12a=a^3

a^2=12

the question asks

total surface area = 6a^2

=6*12 =72

Answer 2

Answer:

volume of a cube= a^3

according to the question

a^3= sum of the length of the edges of a cube

each edge is equal to a

there are a total of 22 edges that means 12a

therefore.

a^3= 12a

a^2=12

surface area of a cube = 6a^2

from the above equation

surface area = 6(12)= 72.0

Step-by-step explanation:

hope it helps you