Study the graph and answer the following questions. The graph shows the number of bicycles parked in the parking space of a hall at various points of time.
What is the average number of parked cycles as seen from the graph?
Two ships are sailing in the sea on the two sides of a light house. The angle of elevation of the top of the light house as observed from the two ships are 30° and 45° respectively. If the light house is 100m high, the distance between the two ships is :(take √3=1.73)