The triangular prism has two types of faces, there are two triangles and three rectangles.

The sum area of all these faces gives the surface area of the triangle prism.

Let the height of the prism is , and the dimensions of base sides are

Formula for surface area of the triangular prism is .

Here A is area of the base i.e triangle.

Area of the triangle , where .

On substituting

Now surface area

Surface area of the triangular prism is 1128.8 m