Answer
diameter=18 cm
radius=18/2=9cm
Area of circle= pi r^2
= 3.142*(9)^2
=254.502 cm^2
Area of square= (l)^2
=(18)^2
=324 cm^2
Total shaded area= 324-254.502
=69.498 cm^2
Hope it helps
Good luck on your assignment
