The lateral area of a shape includes all of its faces except top and bottom. In this case, the lateral surface area includes the three rectangles and excludes the two triangles. Two rectangles have sides of 8cm and 5 cm, and one triangle has sides of 8 cm and 6 cm, then the lateral surface area is:
![LA=8\cdot5+8\cdot5+8\cdot6=128\operatorname{cm}^2]()