Question

A. Water is being pumped into an inverted conical tank at a rate of 10.910.9 cubic meters per min. The tank has height 1414 meters and the diameter at the top is 6.56.5 meters. Find the rate at which the water level is rising when the height of the water is 44 meters.

B. Two cars are moving towards an intersection. One car is 160 meters north of the intersection and moving towards the intersection at 10 m/s, while the other is 180 meters west of the intersection and moving away from the intersection at 14 m/s. How rapidly are the cars approaching each other 3 seconds later?

Answer 1

I did not calculate dh/dt explicitly because I don't understand why values of D and dV/dt have double decimal points.