Distance of chord AB from the centre of a circle is 8 cm. Length of the chord AB is 12 cm.Find the diameter of circle
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Given length of chord AB = 12 cm.
Distance of chord from center = 8 cm.
OC=8 cm .AC= 12/2 =6 cm
In △OAC
OA²= Ac²+OC²
OA²=(6)²+(8)²= 36+64
[ OA=10 cm].
∴ Diameter of circle is 2(OA) = 20 cm
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