Q. 255.0( 2 Votes )

In Fig. 10.87, tw

Answer :


QP = 4.5 cm

Property: If two tangents are drawn to a circle from one external point, then their tangent segments (lines joining the external point and the points of tangency on circle) are equal.

By the above property,

PQ = PT = PR = 4.5 cm (tangent from P)


QR = PQ + PR

QR = PQ + PQ [PQ = PR]

QR = 2PQ

QR = 2 × 4.5 cm

QR = 9 cm

Hence, QR = 9 cm

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