Greetings from Brasil...
The expression that allows you to calculate the distance between two points is:
d(A; B) = √[(Xb - Xa)² + (Yb - Ya)²]
d(A; B) = √[(7 - (- 4))² + (18 - 5)²]
d(A; B) = √[(7 + 4)² + 13²]
d(A; B) = √[11² + 13²]
d(A; B) = √[121 + 169]
d(A; B) = √290
d(A; B) ≈ 17.03
