Consider the isosceles triangle \(PQR\) with \(PQ = PR\), and the base \(QR\) measures 26 \(m\) and the altitude \(PS =\) 84 \(m\). Calculate the correspondence and the perimeter of the triangle.
1. Select the exact correspondences from the list of choices:
[Note: Select one correct answer from each of the below list]
List - 1:
List - 2:
List - 3:
2. The perimeter of the triangle is \(m\).