Finding the surface area of a triangular prism involves adding up the areas of all its faces. You'll calculate the area of the two triangular bases and the three rectangular sides. The formula for the area of a triangle is (\frac{1}{2} \times \text{base} \times \text{height}), and for rectangles, it's (\text{length} \times \text{width}). Do you have the specific measurements for your prism? I'd be happy to help with an example if you like!