Circles

The distance between two parallel tangents of a circle of radius 4 cm is

• 2 cm

• 4 cm

• 6 cm

• 8 cm

• 135°

• 145°

• 165°

• 155°

A tangent is drawn from a point at a distance of 17 cm of circle C(0, r) of radius 8 cm. The length of its tangent is

• 5 cm

• 9 cm

• 15 cm

• 23 cm

The length of tangents drawn from an external point to the circle

• are not equal

• are Parallel

• are equal

• sometimes equal

Number of tangents drawn at a point of the circle is/are

• one

• two

• none

• infinite

The tangents drawn at the extremities of the diameter of a circle are

• perpendicular

• parallel

• equal

• none of these

The length of a tangent drawn from a point at a distance of 10 cm of circle is 8 cm. The radius of the circle is

• 4 cm

• 5 cm

• 6 cm

• 7 cm

In given figure, CP and CQ are tangents to a circle with centre O. ARB is another tangent touching the circle at R. If CP = 11 cm and BC = 6 cm then the length of BR is

• 6 cm

• 5 cm

• 4 cm

• 3 cm

From a point P which is at a distance of 13 cm from the centre O of a circle of radius 5 cm, the pair of tangents PQ and PR to the circle are drawn. Then the area of the quadrilateral PQOR is

• 60 cm²

• 65 cm²

• 30 cm²

• 32.5 cm²

• 40°

• 50°

• 140°

• 150°