Question

The volume of a cube is $729$ $c{m}^2$. Find its total surface area.

• A. $486$ sq. cm
• B. $480$ sq.cm
• C. $475$ sq.cm
• D. $485$ sq.cm

Answer 1

The correct option is A $486$ sq. cm

Given, volume of a cube $=729$ sq.cm
We know, volume of a cube is $a^3=729$
$\Rightarrow a=9$ cm

So, the total surface area is ${6a}^2=486$ sq.cm

Hence, option A is the correct answer.