O is the center of a circle having a chord AB.AB=12, angleAOB =`120^@`.Find the radius

In the picture below, O is the center of the circle and OABC is a rectangle OA =8c.m OC =15cm. Find the area of the shaded portion of the circle.

In the figure, O is the center of the circle and A B and CD are chords with AB=CD Prove that angle < OAB=< OCD

In the figure, Ois the centre of the circle and AB, CD are chords with angle O A B=angle 0 C D Rrove that A B=C D.

In the figure 0 is the centre of the circle. OB=5 cm. Distance from 0 to chord AB is 3 cm. Find the length of A B.

In the figure 0 is the center of the circle. AB and PQ are two chords at equal distance from the center. A B=12 cm, OC=8 cm is the perpendicular distance from center to AB a) What is the length of PQ? b) Calculate the radius of the circle.

The centre of a circleis the origin and it passes through the point (9,12).Find the radius of the circle.

In the figure, BC is the diameter of the circle. angle ABC=angle B C D, BC=10cm,AB=6 cm , what is the distance between the chords A B and CD.

O is the centre of the circle. A B=B C=A C=10 cm a) b) What is the radius of the circle? c) Find the area of the circle.