Question

radius of a circle is 25 cm and the distance of its chord from the centre is 4 cm what is the length of the chord?​ tell​

Answer 1

Answer:

⇒OA=15cm

OA is distance of chord from O.

Step-by-step explanation:

As perpendicular from centre bisects the chord,

⇒CA=AD=20cm

In ΔOAD, OD^

=OA^2

+AD ^2

(Pythagoras theorem)

⇒OA ^2

=OD^2 −AD^2

=25^2−20^2

=625−400=225

⇒OA=15cm

OA is distance of chord from O.