1.

A base of a triangle QR touches a circle at S. The other two sides PQ and QR of ∆PQR is extended such a way that they touch the circle at T and U respectively .If the perimeter of ∆PQR is 10 cm, then length of PT is

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A base of a triangle QR touches a circle at S. The other two sides PQ and QR of PQR is extended such a way that they touch the circle at T and U respectively .If the perimeter of PQR is 10 cm, then length of PT is




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