Answer:
Step-by-step explanation:
since the lines are perpendicular, meaning that
78
Step-by-step
I hope it's helped
1,570
10×2=20
20×3=60
30×5=150
40×7=280
50×4=250
60×3=180
70×8=630
Now,
20+60+150+ 280 +250+ 280+ 630=1,570
this is the answer