Please help me i don get it please show your work I will give brainyleast

Answer:
81.1 in
Step-by-step explanation:
To find the surface area of a triangular prism:
Find the base area and the remaining 3 rectangles and add them all together.
1.5*2=3 (base of the shape)
2*13=26
1.5*13=19.6
2.5*13=32.5
3+26+19.6+32.5=81.1