Strike a chord

Discrete Mathematics Level 4

Consider concentric circles with respective radii $\pi$ and $2\pi$ . Choose two points on the larger circle independently and uniformly at random, and then join them to form a chord. If $P$ is the probability that this chord intersects the smaller circle at at least one point, then find $\lfloor 1000P \rfloor$ .

Notation: $\lfloor \cdot \rfloor$ denotes the floor function.