1. Estimate the value of16.02 using a linear approximation and without using any kind of computational aid.
2. A cylindrical tank of radius 2.5 feet is being drained of water at a rate of 0.25 ft³/sec. How fast is the height of the water decreasing?
3. A piece of pipe is being carried down a hallway that is 9 feet wide. At the end of the hallway there is a right-angled turn and the hallway widens up to 25 feet wide. What is the longest pipe (always keeping it horizontal) that can be carried around the turn in the hallway?