In triangleABC segPQ is bisector of angleQPR ,QS=6 ,SR=8 ,PQ=15 ,find PR
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Answer is 20
By theorem of bisector of an angle of a triangle,
PR/PQ = SR/QS
PR/15 = 8/6
6PR = 15×8
6PR = 120
PR = 120/6
PR = 20cm
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