Question

Find the total surface area and volume of a cube whose length is $12$ cm.

Answer 1

We know that surface area of cube is $6l^2$.

It is given that the length of the cube is $12$ cm, therefore,

$A=6\times {12}^2=6\times 144=864$ cm${}^2$

Now, the volume of the cube is $l^3$, therefore, the volume with length $l=12$ cm is:

$V={12}^3=1728$ cm${}^3$

Hence, the total surface area is $864$ cm${}^2$ and the volume of the cube is $1728$ cm${}^3$.