Answer:
400 square cm
Step-by-step explanation:
The surface area of the figure is composed of the area of the two triangular, and three rectangular sides.
The surface area of the triangular sides is
![2*((1)/(2)\cdot8\operatorname{cm}\cdot15\operatorname{cm})_{}=120\operatorname{cm}^2]()
The surface area of the two rectangular bases is
![(15\operatorname{cm}*7\operatorname{cm})+(8\operatorname{cm}*7\operatorname{cm})=161\operatorname{cm}^2]()
And the surface area of the lateral side is
![17\operatorname{cm}*7\operatorname{cm}=119\operatorname{cm}^2]()
Therefore, the total surface area of the prism is
![120\operatorname{cm}+161\operatorname{cm}+119\operatorname{cm}=400\operatorname{cm}]()
The surface area of the triangular prism is 400 square cm.