Question

Minimum revolutions to move center of a circle to a target

Answer 1

Given a circle of radius r and center in point(x1, y1) and given a point(x2, y2). The task is move center of circle from given center (x1, y1) to target (x2, y2) using minimum number of steps. In one step, we can put a pin on the border of the circle at any point, then rotate the circle around that pin by any angle and finally remove the pin.