Area of shaded region=Area of the circle-Area of four triangles-Area of a square
Area of four triangles =4×12×7×7=4×492=2×49=98cm2
Area of square=(side)2=(7)2=49cm2
[1.5 marks]
Area of the circle
=πr2=227×212×212=11×3×212=6932 =346.5cm2
Area of shaded region=(346.5-98-49)
=199.5cm2
[1.5 marks]