In a cirele with radius 5 cm, a chord is at a distance of 3 cm from the centre. The length of the chord is:
Answer & explanation
Correct answer: option 3
As OR is perpendicular to PQ
In Triangle ORQ,
h² = b² + p²
OQ² = OR² + RQ²
5² = 3² + RQ²
RQ² = 25 - 9 = 16
RQ = 4
Now, PQ = 2RQ = 2 x 4
= 8 cm