The rain water from a roof of `22 m xx 20 m` drains into a cylinderical vessel having diameter of base 2 m. and height 3.5 m. If the vessel is just full, find the rainfall in cm.

The rain water from a roof of 33 m xx 30 m drains into a cylinderical vessel having diameter of base 4 m. and height 4.2 m. If the vessel is just full, find the rainfall in cm.

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

Find the total surface area of a closed cylindrical petrol storage tank whose diameter 4.2 m and height 4.5 m.

A circus tent is cylindrical upto a height of 3 m and conical above it. If the diameter of the base is 105 m and the slant height of the conical part is 53 m, find the total canvas used in making the tent.

Water is falling down at the rate of 1.8 Kg per minute from a vetical tube. The radius at the bottom of the tube is 0.004 m and pressure around it is 0.76m of Hg. The diameter of the tube at a height of 0.5 m from the bottom is 0.005 m. find the pressure at that point.

An oil drum is in the shape of a cyinder having the following dimensions : diameter is 2 m. and height is 7m. The painter charges Rs. 3 per m^(2) to paint the drum. Find the total charges to be paid to the painter for 20 drums.

Water having surface tension of 0.075J/ m^2 is poured in to a cylindrical vessel of radius 5cm. Find the surface energy possessed by it in 10^(-4) J(nearly)