1.

e In the given figure, QR is a common tangent to given circle which meet at T: Tangent at T meets QRat P IfQP-3.8 em, then find length ofQR

Answer»

Weknowthatlengthofthetangentsdrawnfromanexternalpointtoacirclearealwaysequal.

So,PQ=PTandPR=PT.

Hence,PQ=PT=PR

Now,PQ=3.8cm

So,PT=3.8cm

Now,PR=3.8cmn

ow,QR=PQ+PR=3.8+3.8=7.6cm

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