<p>The maximum speed of a boat in still water is 27 km/h. Now this boat is moving downstream in a river flowing at 9 km/h. A man in the boat throws a ball vertically upwards with speed of 10 m/s. Range of the ball as observed by an observer at rest on the bank is_________cm. (Take g = 10&nbsp;<span class="equation">\(m/s^2\)</span>)​​​​​​​</p>