Answer:
see the explanation
Explanation:
we know that
The area of the composite figure is equal to the area of a semicircle plus the area of a rectangle
step 1
Find the area of semicircle
The area of semicircle is

step 2
Find the area of rectangle
The area of rectangle is equal to

where
b is the base of rectangle (is the same that the diameter of semicircle)
h is the height of rectangle


step 3
Find the area of the composite figure
Adds the areas
