Amy and Brian are standing 91m apart, and they are both looking up at a roller coaster, as shown below. (Note that the figure is not drawn to scale.) One of the cars of the roller coaster is moving at a constant speed of 4 /ms. The car is currently located directly above Amy, and the highest point on the roller coaster is directly above Brian. The car begins to ascend towards the highest point on the track at an angle of 38° from the horizontal. Find the remaining distance, r, that will be between the car and the highest point after 17 seconds. Carry your intermediate computations to at least four decimal places, and round your answer to the nearest tenth of a meter.