Question: what is the formula for total surface area for a triangular prism?
Answer: Triangular prisms have their own formula for finding surface area because they have two triangular faces opposite each other. The formula \begin{align*}A = \frac{1}{2} bh\end{align*} is used to find the area of the top and bases triangular faces, where A = area, b = base, and h = height.