O is the centre of the circle, OA =10 centimetre and OC=6 cm. find the length of a b
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Answered by
1
it will be 20 cm in my thinking because OA CLEARS THAT THEY ARE RADIUS SO OC WILL BE CHORDS
Answered by
0
Answer:
Answer
Given OA=10cm
OC=6cm
∠OCA= 90
∘
By Pythagoras theorem,
AC
2
=OA
2
−OC
2
=10
2
−6
2
AC=8cm
We know that perpendicular from centre of circle bisects the chord
Therefore AB=2AC
AB=16cm
option D is the answer
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