Answer:
57.87
Explanation:
First, we need to find the area of the rectangle.
12x6=72
Next, we need to find the area of the full circle.
r=3
The area of the full circle is 28.26.
So half of the circle's area is 14.13.
Now, we subtract the area of half the circle from the total rectangle.
72-14.13=57.87
The answer is 57.87