A circle with centre has radius

MATHEMATICS · Subjective · CBSE · Mathematics · Circles · Circles

Problem

A circle with centre

O

has radius

4\,\text{cm}

. From an external point

P

, two tangents

PA

and

PB

are drawn to the circle such that

PA=6\,\text{cm}

. (i) Find the length of

PB

. (ii) Join

OA

and

OB

. Calculate the perimeter of quadrilateral

OAPB

. (iii) Determine the area of triangle

APB