What is the rate of change they are looking for?

(1 point) A lighthouse is located on an island 6 miles from the closest point on a straight shoreline. If the lighthouse light rotates clockwise at a constant rate of 11 revolutions per minute, how fast does the beam of light move across the shore when it is 145 miles from the point on the shore closest to the island? At the moment the beam of light is 145 miles from the point on the shore closest to the island, the beam is moving towards the point at a rate of at a rate of :=: mi/min