She added 4r and ,+r instead of 4r and -r
Hello there!
The answer is
51.5
I hope it helps you! :)
Your friend, 
Please mark Brainliest! I would really appreciate it! :)
Answer:
The volume of the triangular prism is 
Step-by-step explanation:
we know that
The volume of the triangular prism is equal to

where
B is the area of the base
H is the height of the prism
<em>Find the area of the triangular base B</em>

substitute the given values

<em>Find the volume</em>

If t (n)=200 then change the equation to 200=5•2 then you would need to multiply 10 by 20 to get the answer