Posted by **Priyanka** on Monday, January 14, 2013 at 8:45am.

The radius of a circle is 8cm, and the length of one of its chords is 12cm. Find the distance of the chord from the centre.

- Maths -
**Reiny**, Monday, January 14, 2013 at 9:10am
You can create a right-angled triangle

with hypotenuse = 8 , (the radius)

base of 6 , (1/2 your chord)

and the height unknown, call it x

x^2 + 6^2 = 8^2

x^2 = 28

x = √28 = 2√7

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