Answer:
D-70.81
Step-by-step explanation:
I did the math, this should be correct.
Good luck!
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

83, 74, 65, 56,47,38,29,20,11,2,etc
hope this helps