I think AVM= 35 degrees
Hope this helps
The answer is A. Good luck man!! :)
Two solutions:
1. x =(100-√2160)/2=50-6√ 15 = 26.762
2. x =(100+√2160)/2=50+6√ 15 = 73.238
As we are given with

we are supposed to simplify this expression. which can be done as below


The area is the average of the 2 heights times the base, which is:
(24+16)/2*19.2=384 in^2=D