In a circle, a chord is $10$ cm and at distance $12$ cm from centre. Radius is

In a circle, a chord is $10$ cm and at distance $12$ cm from centre. Radius is
  1. $13$ cm
  2. $22$ cm
  3. $2$ cm
  4. $144$ cm

Solution

$r = \sqrt{12^2 + 5^2} = \sqrt{169} = 13$.

Asked in: MH-SSC-9

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