13. Determine the lengths of the remaining sides of the triangle

In the given triangular ruler, \(\triangle ABC\) is similar to \(\triangle PQR\). If \(AB =\) 11 \(cm\), \(BC =\) 21 \(cm\), \(QR =\) 7 \(cm\), \(RP =\) 3 \(cm\), then find the remaining lengths of both the triangles.

 

 

1. The length of \(CA\) is  \(cm\).

 

2. The length of \(PQ\) is  \(cm\).