Math New Drill (level 1) : Geometry(Plane figure) Shadow area in a right hexagon

As shown in a lower figure, a right hexagon is in a circle 3 cm in radius. 

The point A is the middle point of the side. 

Find the area of a shadow area. 

Pi is assumed to be 3.14.

Answer

9.42 cm²

Solution

Shadow area can be transformed with same area to Fig.2 below.

3 × 3 × 3.14 × 120/360 = 9.42 cm².