A semicircle is attached to the side of a rectangle as shown.What is the best approximation for the area of this figure?Use 3.14 to approximate pi.

Area if rectangle = 18*6 = 108
Area of semi circle = pi*r^2/2
Pi * 3^2 / 2
Pi * 4.5
= 14.13716694

Then add both areas for the area of the entire shape:
14.13716694+108 = 122.1371669 cm^2