28, by the way you could’ve just used a calculator
Answer:
14.13
Step-by-step explanation:
use the radius, 3 squared
so 3 x 3 = 9
9 x 3.14 = 28.26
28.26 / 2 ( because it is a semicircle) = 14.13
That's already rounded to the nearest hundredth, so the answer is 3419.46.
The picture below will help you.