38. Exemplar exercise problems III

1. In \(\triangle PQR\), \(\angle R = \angle P\) and \(QR = 4 \ cm\) and \(PR = 5 \ cm\). Then the length of \(PQ\) is

 

2. It is given that \(\triangle ABC \cong \triangle FDE\) and \(AB = 5 \ cm\), \(\angle B = 40^{\circ}\) and \(\angle A = 80^{\circ}\). Then which of the following is true?