Given:
Consider the dimensions of the cuboid are 5 by 4 by 6.
To find:
The total surface of the cuboid.
Solution:
The total surface area of a cuboid is:

Where, l is length, w is width and h is the height.
Substituting l=5, b=4 and h=6, we get




Therefore, the total surface area of the cuboid is 148 sq. units.