In the given figure, QR is a common tang...

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=3.8cm` then the length of `QR` is

`1.9cm`

`3.8cm`

`5.7cm`

`7.6cm`

Text Solution

Verified by Experts

The correct Answer is:

`PQ=PT=3.8cm`, `PR=PT=3.8cm`,
`QR=PR+PR=(3.8+3.8)cm=7.6cm`

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