Answer:
Step-by-step explanation:
Each of the four sides of this triangular prism has height 8 m and base 12 m. The area of each face this thus A = (1/2)(base)(height), or
A = (1/2)(12 m)(8 m) = 48 m^2. The total side area is thus 192 m^2.
This is the surface area. If we want to include the base area, that would be another (12 m)^2 , or 144 m^2.
