To get the other side of the lake, one can drive around it on lake road, go over the bridge or ride the ferry. how many different ways can one go across the lake and back?

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).