Answer:
The volume of the prism is 
Step-by-step explanation:
we know that
The volume of the prism is equal to

where
B is the area of the triangular base
L is the length of the prism
we have

<em>Find the area of the base B</em>
The area of a equilateral triangle is equal to


substitute

13 + 6/6
13 + 1
14
The answer is 14.
Hope this helps!
B and C I believe .............
Answer:
answer is 19.
Step-by-step explanation:
see picture for explanation.
hope it helps you.