Find the length of a chord which is at a distance of 4 cm from the centre of a circle of radius 5 cm.

# Find the length of a chord which is at a distance of 4 cm from the centre of a circle of radius 5 cm

and radius of circle, OA = 5 cm

In right angled ∆APO,

We know that, the perpendicular drawn from the centre of a circle to a chord divides the chord into two equal parts.