How you wrote it is kind of confusing but if I'm reading what you're saying right. There are 2028 . <span />
Im not smart im not that sure of my answer but 23.3
h=9
A=((a+b)/2)h
234=((32+20)/2)h
234=(52/2)h
234=26h
9=h
1:4 is you answer. 4-3 is 1 and you do the same to 7
