O is the centre of the circle of radius r cm, OP and OQ are perpendicular AB and CD respectively and PQ=1cm if AB is parallel to CD, AB=6cm and CD =8cm,determine r.
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the circle of radius r cm, OP and OQ are perpendicular AB and CD respectively and PQ=1cm if AB is parallel to CD, AB=6cm and CD =8cm,determine
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