Find the area of the two triangular bases: (2 times frac{1}{2}bh)
Find the area of the three rectangular faces: ((a+b+c)times L)
Add the two results together
Use the formula: (SA = (bh) + (a+b+c)L)
Here, (b) and (h) are the base and height of the triangle, (a), (b), and (c) are the side lengths of the triangle, and (L) is the length of the prism