Water is flowing at the speed of 2.52 km/h through a cylindrical pipe into a cylindrical tank with base radius 40 cm. If the increase in the level of water in the tank in half an hour is 3.15 m, find the internal diameter of the pipe.

If a ball of radius 2.1 cm is put into a cylindrical cup full of water having radius 5 cm and height 6 cm, then find the volume of water that flows out of the cylindrical cup.

In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system.

A farmer connects a pipe of internal diameter 20 cm from a canal into a cylindrical tank in her field which is 10 m in diameter and 2 m deep. If water flows through the pipe at the rate of 3 km// h, in how much time will the tank be filled ?

A hot water system (Geyser) consists of a cylindrical pipe of length 14 m and diameter 5 cm. Find the total radiating surface of hot water system.

A cylindrical tank of radius 10 m is being filled with wheat at the rate of 314 cubic metre per hour. Then the depth of the wheat is increasing at the rate of ………..

Find (i) The total surface area of a closed cylindrical petrol storage tank whose diameter 4.2 m. and height 4.5 m.

Water is flowing with velocity 4ms^(-1) in a cylinder of diameter 8 cm .It is connectedto a pipe with it end tip of diameter 2cm . Calculate the velocity of water at this free end.

The radius of a cylindrical roller is 140 cm and its length is 100 cm. It takes 500 complete revolutions to level a playground completely. Find the area of playground in m^(2) .

A fully loaded boeing aircraft has a mass of 3.3 times 10^5 Kg . Its total wing area is 500 m^2 . It is in level flight with a speed of 960 km//h (a) Estimate the pressure difference between the lower and upper surfaces of the wings (b) Estimate the fractional increase in the speed of the air on the surface of the wing relative to the lower surface.[ The density of air is p= 1.2 kg m^-3 ]