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Question

Radius of circle is 10 cm. There are two chords of length 16 cm each. What will be the distance of these chords form the centre of the circle?

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Solution

Length of the chord AB=16cm and radius(r)=10cm.
To find:- OM
Construction: Draw a perpendicular OM from centre O such that it bisects the chord AB
Proof: In right angled ΔOMB
OB2=OM2+BM2
(10)2=OM2+(8)2
100=OM2+64
OM2=10064
OM2=36
OM=36
OM=6cm
Hence, the distance of the chord from the centre of the circle is 6cm.

1201427_1265465_ans_24c7b47b92f7401baaa123d88304a3c9.jpg

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