Question

A cube is made by arranging 64 cubes having side of 1 cm, find the total surface area of cube so formed.

Answer 1

Side of bigger cube

=cube root 64

=4cm

Total surface area of cube=6a^2

=6×4^2

=6×16

=96cm^2.

Answer 2

The total surface area of cube so formed is $96 cm^2$.

Step-by-step explanation:

Given,

The volume of cube = 64 cubic units

To find,  the total surface area of cube so formed = ?

∴The volume of cube = $side^{3}$

⇒ $side^{3}= 64$=$4^{3}$

∴ Side = 4 units

∴ Total surface area of cube $= 6a^2$

$= 6(4)^2$

$=6\times 16$

$=96 cm^2$

Hence, the total surface area of cube so formed is $96 cm^2$.