Hi, I really need help with this question because 1. I suck at geometry and 2. I'm lost but I think this is the answer.

Question

Find the volume of a triangular prism with the following dimensions. Round to the nearest whole number.
triangle base: 9 ft.
triangle height: 4 ft.
prism height: 9.5 ft.
A. 23 ft.^3
B. 86 ft^3
C. 171 ft.^3*** (I think this is the answer)
D. 342 ft.^3
Please help me!!

Answer 1

volume= areabase*height
= (1/2 *9*4)*9.5

and, you are correct