I think I could possibly be C
If you are trying to look for the 6/4 which is improper and tring to make it proper the answer is = 1 1/2
It should be supplementary angles theorem. 6 and 3 must add to 180 degrees to make a straight line.
B) 8
height=2(area/base)
h=2(24/6)
h=2(4)
h=8