A circle with a centre \(O\) is merged with the equilateral triangle \(OAB\) having sides of 8.6 \(cm\). [Use \(\pi \) \(=\) \(3.14\)].
Find the area of the shaded region if the radius of the circle is 4.6 \(cm\).
The area of the shaded region \(=\) \(cm^2\)
[Note: Round off the answer obtained to two decimal places if needed]