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 the circle.
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Answer:
Given length of chord AB = 12 cm.
Distance of chord from center = 8 cm.
OC=8 cm .AC=212=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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