Question

CP and CQ are tangents to a circle with centre at 0. ARB is another tangent touching the circle at R. If CP = 11 cm and BC = 7 cm, then the length of BR is

विकल्प

• 6 cm

• 5 cm

• 8 cm

• 4 cm

Answer 1

4 cm

Explanation;

Hint:

BQ = BR = 4 cm ...(Tangent of the circle)

PC = QC = 11 cm ...(Tangent of the circle)

QC = 11 cm

QB + BC = 11

QB + 7 = 11

QB = 11 – 7 = 4 cm

BR = BQ = 4 cm