Answer:

Step-by-step explanation:
r = Radius of semicircle = 
Area of semicircle is given by

The area of the semicircle is
.
The next step in the series is choice D.
Answer:
-2.5
Step-by-step explanation:
-2 1/2 converted to a decimal is -2.5. So, it would be between 3 and 2 in the negatives.