In a hydraulic press the ratio of radius of the piston is 16:3 and arm ratio 9:2 calculate the mechanical advatage of the press.

in a vessel the ratio of helium and oxygen are in ratio 3:5. Calculate the ratio of no. of molecules.

The ratio of the edges of a cuboid is 1:2:3 and its volume is 1,296 cm^3 . What is the area of the whole surface?

A cylinder and a cone are of equal base radii and heights.If the ratio of the areas of their curved surfaces is 8:5,show that the ratio of the radius and the height of each of the two is 3:4.

Define moment of inertia and radius of gyration. Deduce an expression for MI of a circular disc about an axis passing through its centre. Two circular discs have their masses in the ratio 1:2 and their diameters 2:1 . Calculate the ratio of their moments of inertia

Word Problem on Numbers The ratio of income of two persons is 9 : 7 and the ratio of their expenditure is 4 : 3 . If each of them save rupees 200 per month, find their monthly income.

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the ratio of the areas.

The ratio of the radii of two cylinders is 2:3 and the ratio of their heights is 5:3.Find the ratios of their volumes and their curved surfaces.

Two wire made of same material and ratio of their length is 1:2 and ratio of raidus is 2:1. If they are strecthed by same force calculate the ratio of increase in length.

The radii of the bases of a cylinder and a cone are in the ratio 3:4 and their heights are in the ratio 2:3.What is the ratio of their volumes?

If the altitude of two similar triangle are in the ratio 2:3 what is the ratio of their areas?