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Question

In the given figure, ABC is circumscribed. The circle touches the sides AB,BC and CA at P,Q,R respectively. If AP=5cm,BP=7cm,AC=14cm and BC=xcm. The value of x is
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Solution

GivenABCisatriangle,inscircleofwhichtouchesABatP,ACatQandBCatR.AP=5cm,BP=7cm,AC=14cmandBC=xcm.Tofindoutx=?SolutionWeknowthatthelengthsofthetangents,fromapointtoacircle,areequal.AP=AQ=5cm,BP=BR=7cmandCQ=CR.NowCQ=ACAQ=(145)cm=9cm=CR.SoBC=x=CR+BR=(9+7)cm=16cm.AnsOptionB.

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