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A B\ a n d\ C D are two chords of a c...

`A B\ a n d\ C D` are two chords of a circle such that `A B=6\ c m ,\ C D=12\ c m\ a n d\ A B C Ddot` If the distance between `A B\ a n d\ C D` is `3\ c m ,` find the radius of the circle.

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6.7 cm
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