A semicircle with diameter PQ sits on an isosceles triangle PQR. to form a region shaped like a two-dimensional ice cream cone, as shown in the figure below. If 4 (0) is the area of the semicircle and B(8) is the area of the triangle. Then to show A(0) # 1- cos (8) 2 A(8) P Q 10 cm 10 cm R