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A B C is a right angled triangle, rig...

`A B C` is a right angled triangle, right angled at `B` such that `B C=6c m` and `A B=8c m` . A circle with centre `O` is inscribed in ` A B C` . The radius of the circle is (a) 1cm (b) 2cm (c) 3cm (d) 4cm

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