Diameter of a circle is 40 cm. Distance of the chord from the centre of the circle is 12 cm . Find the length of the chord.
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- let AB be the cord of the given circle
- Diameter =40 cm, then radius=20 cm
- we know that a line drawn from the center to the chord is perpendicular to the chord
- by applying pythagoras theorem
- ac=√oa^2-oc^2
- ac=√256 =16 cm
- length of a chord =2×16 cm=32cm
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