Two circles of radii `10\ c m\ a n d\ 8\ c m` intersect and the length of the common chord is `12 c m`. Find the distance between their centres.

The circles having radii r_1 and r_2 intersect orthogonally. Find the length of their common chord.

The radius of a circle is 8cm and the length of one of its chords is 12cm. Find the distance of the chord from the centre.

Two circles of radii 5\ c m\ a n d\ 3c m intersect at two points and the distance between their centres is 4c m . Find the length of the common chord.

Two circles of radii 10 cm and 17 cm . Intersecting each other at two points and the distances between their centres is 21 cm . Find the length of the common chords.

Two circles of radii 5\ c m\ a n d\ 3c m intersect at two points and the distance between their centres is 4c mdot Find the length of the common chord.

Two circles of radil 5c m and 3c m intersect at two points and the distance between their centres is 4c mdot Find the length of the common chord.

A B\ a n d\ C D are two parallel chords of a circle with centre O such that A B=6\ c m\ a n d\ C D=12\ c mdot The chords are on the same side of the centre and the distance between them is 3 cm. The radius of the circle is (a) 6\ c m (b) 5\ sqrt(2)\ c m (c) 7\ c m (d) 3\ sqrt(5)\ c m

In a circle of radius 5\ c m ,\ A B\ a n d\ A C are two chords such that A B=A C=6c m . Find the length of the chord B C .

A B and C D are two parallel chords of a circle such that A B=10c m and C D=24c mdot If the chords are on the opposite sides of the centre and the distance between them is 17c m , find the radius of the circle.

The length of common chord of two intersecting circles is 30 cm. If the diameters of these two circles be 50 cm and 34 cm. Calculate the distance between their centres.