Hello kandyflossHave a look at the diagram I've attached.

I assume that it's the radius of the discs that is 11.6 cm. So in the :and the area of the overlap is 4 times the area of the shape bounded by the straight lines AB and BP and the arc AP; which is:

radians

(that's the area of sector OAP minus the area of triangle OAB)Grandad, if my arithmetic is correct