Water is falling on a surface, wetting a circular area that is expanding at a rate of 9 mm-/s. How fast is the radius of the wetted area expanding when the radius is 146 mm? (Round your answer to four decimal places.) 0.0098 mm/s 0.0616 mm/s 0.0196 mm/s 101.9271 mm/s

A pet store has a large tank in the shape of an invertedright circular cone that they use to display fish to their customers.Today, the tank needs to be drained in order to clean it. The radiusof the cone at its top is 150 cm and its depth is 90 cm. Water isflowing out of the tank at a rate of 3 liters per second. How fast isthe depth of the water in the tank decreasing when the water is 60cm deep? (Note: 1 mL = 1 cubic centimetre)

A man standing on a dock 1.9 m above water level throws a rope to a lady in a boat. The boat is 3.4 m from the dock. The man pulls in the rope at the rate of 1.2 m/s. Determine how fast the boat is approaching the dock. Assume the rope attaches to the boat at water level. Rate in m/s = Number (Enter your answer rounded to 4 decimal places)