This is IN Calculus. Answer what is required. Provide clean and clear HANDWRITTEN COMPLETE SOLUTIONS. Minimize erasures and provide a clear picture of the solutions thank you and Godbless.

3. An airplane is traveling directly east at 300 km/hr and is climbing at the rate of 600 meters/min. At a certain instant, the airplane is 12,000 meters above ground and 5 km directly west of an observer on the ground. How fast is the distance changing between the airplane and the observer at this instant? (5 points) Given: What is asked? Solution: Diagram