The length of common chord of two circles is 30 cm. if the diameters of circles are 50 cm and 34 cm, then find the distance between these centres.

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.

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.

If the length of a chord of a circle at a distance of 5 cm from the centre of a circle is 24 cm, find the radius of the circle.

The length of diameter in a circle is 10 cm. If the distance from centre to chord of this circle is 4 cm, then find the length of this chord.

Two parallel chords of lengths 30 cm and 16 cm are drawn on the opposite sides of the centre of a circle of radius 17 cm. find the distance between the chords.