The surface area \( SA \) of a triangular prism can be calculated using the formula:
\[ SA = bh + l(a + b + c) \]
Where:
- \( b \) = base length of the triangular face
- \( h \) = height of the triangular face
- \( l \) = length of the prism (the distance between the two triangular faces)
- \( a \), \( b \), and \( c \) = lengths of the sides of the triangular face
In this formula:
- The term \( bh \) represents the area of the triangular face.
- The term \( l(a + b + c) \) represents the total area of the three rectangular faces that connect the two triangular faces.