I have entered this puzzle on several Forums, had many hundreds of views and
not a single correct answer. Almost all the replies including those from degree
holders have stated that the information is insufficient for solution.
I have only ever seen TWO correct answers on the web, one of which I show in my image.
The answer given by ENGINEER is nothing short of brilliant and infinitely more simpler and logical
than the rather complex trigonometrical answer I show.
I apologise for the poor quality of my image, it was the best I could get.
Using zoom and adequate concentration, one can just about follow the logic albeit
Area of green segment = 5.5.