Answer:
2 B + Ph
Explanation:
The surface area of a figure is gotten by adding all the sides of the cross section of the figure.
For a triangular prism, the cross sections are made up of several triangles and a base which is also made up of a triangle.
To get the surface area, we need the following
1/ Perimeter of the base triangle is the sum of all its sides (P)
2. Area of the base triangle (B)
3. Slant height if the prism h
Hence the required formula is expressed as;
Surface Area = B+ 1/2Ph
Multiply by 2
Surface area = 2B+1/2Ph(2)
Surface area = 2B+Ph