A 3cm x 3cm rectangle sits inside a circle with radius of 4cm

Area of shaded region is 41.24  

Given,

          Length of rectangle(l) = 3 cm

          Breadth of rectangle(b) = 3 cm

Area of rectangle is given by

               = length x breadth

                   = 3 x 3

                   = 9  

Given,

          Radius of circle(r) = 4 cm

Area of circle is given by

                     =  

                     = 3.14(16)

                     = 50.24  

Area of the shaded region = area of the circle - area of the rectangle

                                                    = 50.24 - 9

                                                     = 41.24  

i believe the answer is the polygon, heptagon.