Answer:
sqrt(45)
Step-by-step explanation:
To go from A to B, go 3 units right and 6 units up. Those are the sides of a right triangle. The shortest path from A to B is the hypotenuse of the triangle.
(AB)^2 = 3^2 + 6^2
(AB)^2 = 9 + 36
(AB)^2 = 45
AB = sqrt(45)
