X=41 Just S=ubract The 4 from 37 Then Subract X From X And Divide The Whole Thing By -1
SA= bh+2ls+lw
SA= 26*10 +40*26(2)+40*10
SA=260+1040(2)+400
SA=260+2080+400
SA=2740
Collinear=On the same line
N-U
N-T
U-T
I believe that is what this questions is asking. :)