Question

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?

Answer 1

`abs(QR)=2r" cm."`

Explanation:

If `PQ` and `PR` are mutually perpendicular cords of a circle
then `QR` is a bisector of the circle.