Two circles \(p \) and \(q\) which have the same radii of 7 cm intersect to each other and the distance between their centre, \(pq = 11 \text{ cm}\).

\(ab\) is a tangent line that touches the circle \(p\) and \(q\) at points \(a\) and \(b\) respectively.

Find the area of the shaded region ( in \(\text{cm}^2\)).

Use the approximation, \( \pi = \dfrac{22}7 \).

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