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Radius of a circle is 5 cm. the leghth of chord is 8cm find the distance of chord from the centre |
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Answer» LET O be the centre of the circle and AB be the chord. Join OA. Draw OC PERPENDICULAR to AB. AC=1/2AB (Perpendicular from the centre bisects the chord) = 4 cm OA=5 cm (Radius) Triangle OCA is RIGHT angled, ... OC2 =OA2 - AC2 (Pythagoras Theorem) =52 - 42 =25 - 16 =9 ... OC= 3cm |
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