Half of the length of the chord of a circle is 12 cm and the perpendicular distance between the centre and the chord is 5 cm. The radius of the circle is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 13 cm.
The radius of the circle can be calculated using Pythagoras theorem.
According to the given question,
r2 = 122 + 52
⇒ r2 = 144 + 25
⇒ r2 = 169
⇒ r = 13 cm