The answer is 20. You use 20 markers for it all.
50 because 80+50+x=180 (inside triangle) x=130 180-130= 50 (angle outside triangle)
h=9
A=((a+b)/2)h
234=((32+20)/2)h
234=(52/2)h
234=26h
9=h
It would be...
(18 +28) divided by two
then take that and multiply it by the height - 5
the 6 in this equation doesn't matter because it is not the height of the shape
