Two circle of same radii meet each other of T if qp =5 the value of qr
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Lengths of the tangents drawn from an external point to a circle are equal.
∴QP=PT=3.8cm............(i)
PR=PT=3.8cm............(ii)
From equations (i) and (ii):
QP=PR=3.8cm
But, QR=QP+PR
∴QR=3.8+3.8
QR=7.6cm
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