In figure, a circle inscribed in a Δ ABC,touching AB, BC and AC at P, Q, R respectively, If AB = 10 cm, AR = 7 cm and RC = 5cm then, the length of BC is

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

PA and PB are two tangents drawn to a circle from a point P outside the circle. If PA = 5 cm and ∠APB = 60^o, then the length of AB is

In figure ∠BDC = 35⁰ .Which angle is equal to ∠BDC?

From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. Then, the radius of the circle is

            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

Two circles of radii 4 cm and 6 cm touch each other .then distance between their centres when they internally 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?

How many tangents can a circle have?

Which one of the following may be the central angle of a minor arc