To find the surface area of the triangular prism, we need to calculate the area of each face and add them together.
1. The area of the two triangular faces is 2*(1/2)*base*height.
- Base of the triangle is 25 units and height is 7 units.
- So, the area of the two triangular faces is 2*(1/2)*25*7 = 175 square units.
2. The area of the three rectangular faces is 2*width*height + width*height.
- The width is 100 units and the height of the middle rectangle is 24 units.
- So, the total area of the three rectangular faces is 2*100*24 + 100*24 = 4800 square units.
Adding the area of the triangular faces and the area of the rectangular faces, we get:
175 + 4800 = 4975 square units.
Therefore, the surface area of the triangular prism is 4975 square units.