Answer:
8
Step-by-step explanation:
The question is basically <em>"Find the radius of the circle that has a circumference of 16π"</em>
<em></em>
The formula for circumference of a circle is given as 
Where
C is the circumference
r is the radius
Plugging in <em>16π</em><em> into C</em> and solving for r gives us the radius. Shown below:

the radius is 8
(84÷7+9)÷3 if not, I tried XD
You can find it in this image below.