The length of a tangent drawn from a point 13 cm away from the centre of a circle of radius 5 cm is

From a point P, the length of the tangent to a circle is 15 cm and distance of P from the centre of the circle is 17 cm. Then what is the radius of the circle?

            In figure, three circles centres A, B, C respectively touch each other externally. If A B = 5 cm, B C = 7 cm and CA =  6 cm then, the radius of the circle with centre A is

PQRS is a cyclic quadrilateral ∠P : ∠R = 3 : 2
∠Q:∠S = 4:1 then ∠S =

PQRS is a cyclic quadrilateral ∠P;∠R = 2:7.Then  ∠R =

In figure, quadrilateral ABCD is drawn such that all its sides touch the circle. If AB = 7cm, BC = 4cm and CD = 5 cm, then, the length of AD is

In figure, PA and PB are two tangents to a circle with center O, from an external point P such that PA =  5 cm and < APB = 60^o. Then, the length of chord AB is

Central angle of an arc is (45 - x)^o .What is the central angle of its complementary arc

In two concentric circles, a chord of the larger circle touches the smaller circle. If the length of this chord is 8 cm and the diameter of the smaller circle is 6 cm then, the diameter of the larger circle is

How many tangents can a circle have?