Question: 16. An Inverted Conical Water Tank With A Height Of 18 Feet And A Radius Of 6 Feer Is Drained Through A Hole In The Vertex At A

16. An inverted conical water tank with a height of 18 feet and a radius of 6 feer is drained through a hole in the vertex at a rate of 6 ft/min. What is the rate of change of the water depth when the water depth is 3 feet? 18 ft Volume of a cone: = rh 17. A hot air balloon rising straight up from a level filed is tracked by a range finder 500 feet from the liftoff point. At the moment the range finder's elevation angle is 4. the angle is increasing at the rate of 0.14 rad/min. How fast is the balloon rising at that moment? -0.14 rad/min dV 500 ft = 6 ft/min