If the length of \(PR\)\(=\) 36 \(cm\) and \(QR\) \(=\) 77 \(cm\), find the area of the shaded region and also the longest chord of the circle PQ. (Hint: Take \(\pi = \frac{22}{7}\))

Answer:
(i) The length of PQ \(=\)  \(cm\).
(ii) Area of the shaded region \(=\)  \(cm^{2}\).
[Note: Input the area value up to two decimal places.]