# Two chord PQ and PR of a circle are mutually perpendicular to each other .if the length of the radius of the circle is r cm, let us find the length of the chord QR?

Feb 9, 2018

#### Answer:

$\left\mid Q R \right\mid = 2 r \text{ cm.}$

#### Explanation:

If $P Q$ and $P R$ are mutually perpendicular cords of a circle
then $Q R$ is a bisector of the circle.