Given:
Consider the below figure attached with this question.
To find:
The surface area of this solid prism.
Solution:
The surface area of this solid prism is

Where, P is the perimeter of the base, B is the area of the base and h is the height of the prism.
Perimeter of the base is:


Area of the base is:



Putting
and
in the formula for area, we get



Therefore, the surface area of the given prism is 264 m².