The shows two concentric circles and AD is a chord of lenger circle. prove that AB=CD

In the adjoining figure, O is the centre of two concentric circles. The chord AB of larger circle intersects the smaller circle at C and D. (i) Find AC:BD . (ii) If AC=2cm , then find the length of BD.

Prove that in two concentric circles, the chord of the larger circle, which touches the smaller circle, is bisected at the point of contact.

AB and CD are two chords of a circle intersecting at P. Prove that APxxPB=CPxxPD

In the given figure o is the centre of the two concentric circles. A line T cuts the circles at A, B, C and D as shown in the figure. OP is perpendicular to AD. Given OA = 34 cm, OP = 16 cm and AB = 18 cm Find : length of chord AD

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.Find: (a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between two circles ( π=3.14)

In the given figure o is the centre of the two concentric circles. A line T cuts the circles at A, B, C and D as shown in the figure. OP is perpendicular to AD. Given OA = 34 cm, OP = 16 cm and AB = 18 cm Find : length of chord BC

In two concentric circle, prove that a chord of larger circle which is tangent to smaller circle is bisected at the point of contact.

In two concentric circles, a chord of length 24cm of larger circle becomes a tangent to the smaller circle whose radius is 5cm. Find the radius of the larger circle.

In the figure given below, O is the centre of the circle. AB and CD are two chords of the circle. OM is perpendicular to AB and ON is perpendicular to CD. AB = 24 cm, OM = 5 cm, ON = 12 cm. Find the : (i) radius of the circle (ii) length of chord CD