I think these are the right answers.
---------------------------------------------------------------------------
For the first one:
The volume of the triangular prism is: 1030.25cm
The surface area of the triangular prism is: 696.95cm
---------------------------------------------------------------------------
For the second one:
The volume of the triangular prism is: 42cm
The surface area of the triangular prism is: 96cm
---------------------------------------------------------------------------
As for explaining how to find the volume of triangular prisms, use your G00GLE search engine and type "find the volume of triangular prism".
Enter in the data/numbers and it will calculate the answer along with step by step instructions on how it got the answer.
---------------------------------------------------------------------------
Have a good day!!!