Question

For a cube of side length $8$ cm. Match the following.

• A. $512$ cubic units
• B. $384$ sq. units
• C. $256$ sq. units

Answer 1

Since the solid is a cube, all side lengths will be equal.
$\therefore$ We can draw the cube as:


Now, total surface area $=6a^2$
$=6\times 8^2$
$=6\times 64$
$=384$ sq. units

Its lateral surface area $=4a^2$
$=4\times 8^2$
$=256$ sq. units

Also, we know that the volume of the cube $=a^3$
$=8^3$
$=512$ cubic units.