Answer:
?
Step-by-step explanation:
What is the rest of the question
For every boy, there are two girls. The ratio is 2:1 for girls to boys.
Answer:
The shaded are is 
Step-by-step explanation:
we know that
The shaded area is equal to the area of the semicircle minus the area of the circle inside the semicircle
step 1
Find the area of semicircle
The area of semicircle is equal to

where
----> the radius is half the diameter
substitute

step 2
Find the area of the circle inside the semicircle
The area of circle is equal to

where
---> the radius of circle inside is half the radius of semicircle
substitute

step 3
Find the shaded area

assume


3 significant figures is
