If A and B are the two points then find distance between them :
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If A and B are the two points. Find the distance between them : .

Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centres is 4 cm. Find the length of the common chord.

The force of attraction between two point masses is proportional to the product of their mases and inversely proportional to the distance between them. (T or F)

The scale of a map is given as 1:30000000. Two cities are 4 cm apart on the map. Find the actual distance between them.

How does the force of gravitation between two objects change when the distance between them is reduced to half ?

Two hagstaffs stand on a horizontal plane. A and B are two points on the line joining their feet and between them. The angles of elevation of the tops of the flagstaffs as seen from A are 30^@ and 60^@ and as seen from B are 60^@ and 45^@ . If AB is 30 m, then the distance between the flagstaffs is

Let vec a and vec b be two unit vectors and θ is the angle between them. Then vec a+vec b is a unit vector if