In the given figure, QR is a common tangent to the given circles touching externally at the point T. The tangent at T meets QR at P. If PT = 3.8 cm, then the length of QR (in cm) is(a) 3.8 (b) 7.6 (c) 5.7 (d) 1.9 [CBSE 2014]

In the given figure, QR is a common tangent to the given circles touch

1.	In the given figure, QR is a common tangent to the given circles touching externally at the point T. The tangent at T meets QR at P. If PT = 3.8 cm, then the length of QR (in cm) is(a) 3.8 (b) 7.6 (c) 5.7 (d) 1.9 [CBSE 2014]
Answer» In the given figure, QR is a common tangent to the given circles touching externally at the point T. The tangent at T meets QR at P. If PT = 3.8 cm, then the length of QR (in cm) is (a) 3.8 (b) 7.6 (c) 5.7 (d) 1.9 [CBSE 2014]