First find the area of the triangle. The equation is: A= 1/2*b*h A=1/2*3.6*4.8 A= 8.64
Then find the area of the semicircle. If the equation of a circle is A=pi*r^2, then the equation of a semicircle is A=(pi*r^2)/2 A=(pi*1.8*1.8)/2 (radius=1.8 because 3.6/2 =1.8) A=5.09