O TIME RATES A cone with an altitude of 50 cm has its base radi us changing at the rate of one millimeter per second - How fst is its volume changing when the radius is 20 cm.

Give your answer accurate to 3 decimal places. Gas is escaping from a spherical balloon at the rate of 12 ft/hr. At what rate (in feet per hour) is the radius of the balloon decreasing when the volume is 300 ft? ft/hr

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Please written by computer source A ladder ?=13 m long is leaning against a wall. If the lower end of the ladder slides away from the wall at the rate of ?=0.5 m/s, at what rate is the inclination ? of the ladder with respect to the ground changing when the lower end is 4 m from the wall?