Условие:
The diagram shows a regular hexagon overlapping a regular pentagon to enclose a shaded shape. A circle lies within the enclosed shape.
Point A is an intersection between the two polygons, and is a vertex of the hexagon.
Point B is also an intersection between the two polygons such that they create a right angle.
2 sides of the pentagon and 1 side of the hexagon are tangent to the circle.
Given that the circle has a radius of 4 cm , Find the total shaded area to 3 significant figures.
