A rectangular tank is 80 m long and 25 m braod water flows into it through a pipe whose cross section is `25 cm^2`, at the rate of 16 km per hour. How much the level of the water rises in the tank in 45 minutes.

Water flows in a tank 200mxx150m at the base, through a pipe whose cross section is 2 dm by 1.5 dm at the speed of 15 km per hour in what time, will the water by 3 metres deep?

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?

The bottom of a rectangular swimming tank is 25 m by 40m. Water is pumped into the tank at the rate of 500 cubic metres per minute. Find the rate at which the level of water in the tank is rising.

A cuboidal water tank is 6 m long 5 m wide and 4.5 m deep. How many litre of water can it hold ?

From a top of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in one hours.

Water flows out through a circular pipe, whose internal diameter is 2 cm, at the rate of 0.7 m per second into a cylindrical tank, the radius of whose base is 40 cm. By how much will the level of water rise in half an hour ?

An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters 2.5 cm and 3.75 cm. The ratio of the velocities in the two pipes is

The area of cross section of the pipe is 4.8 cm2 and water is pumped out of it and the rate of 24 km/hr. Find in litres the volume of water which flows out of the pipe in one minute.

Height of a tank in the form of an inverted cone is 10 m and radius of its circular base is 2 m. The tank contains water and it is leaking through a hole at its vertex at the rate of 0.02m^(3)//s. Find the rate at which the water level changes and the rate at which the radius of water surface changes when height of water level is 5 m.