What is the answer to this question I have no idea

Answer:
19.28 squared inches
Step-by-step explanation:
Area of a semicircle: (d*3.14)*1/2
A=(4*3.14)*1/2
A=12.56*1/2
A=6.28
Area of trapezoid: [(a+b)/2]*h
A =[(2.5+4)/2]*4
A= (6.5/2)*4
A= 3.25*4
A=13
6.28+13=19.28