14. A rectangular water tank is being filled at a constant rate 20 liters/sec. the base of the tank has dimension W-1m, and L-2 m. What is the rate OF change of the height of water in the tanke? (Express the answer in cm/sec).
15 An airplane is flying in a straight direction and at a constant teight of STTY meters & The angle of elevation of the airplane from a fixed point of Observation is a. The speed of the airplane is stok /hr. what is the rate of charge of angle a when it is 25 degrees? (Express the answer in degrees /ceund) 18/12
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