Plz me, just tell me how i can do this!

You will need to use the Pythagorean Theorem, actually a derivative of it sometimes called the "distance formula" to find the length of the segments between two points.  Mathematically the distance is:

d^2=(x2-x1)^2+(y2-y1)^2

d=√(dx)^2+(dy)^2)   

40%=2/550=1/230=3/1056=14/25