Answer:
R = 14
Step-by-step explanation:
The formula for finding the circumference of a circle is πd or 2πr:
Since we are trying to find the radius, we'll use 2πr.
28 ÷ 2 = 14.
So, that means the radius is 14.
Check:
14 · 2 = 28.
28 · π = 28π
Thus, an answer of [tex]$\boxed{R = 14}$[/tex] is correct.