Question

The total surface area of the cube of side length $5$ units as shown in the diagram above is, while its volume is .

• A. $150$ sq. units
• B. $125$ cubic units
• C. $625$ cubic units
• D. $100$ sq. units

Answer 1

Answer: (A), (B)

$125$ cubic units

The cube has a side length of $s=5$ units as shown:
Now, its total surface area will be the sum of the areas of all the surfaces of the cube.
$=6\times s^2$
$=6\times 5^2$
$=150$ sq. units

Also, the volume of the cube $=s^3$
$=5^3$
$=125$ cubic units.