Answer:
Given circumference (C) = 16 
 
Radius = 
C = 
2π 
2.5464790894703 
Diameter = 
C = 
π 
5.0929581789407 
Area = 
C2 = 
4π 
20.371832715763
Explanation:
We've all seen circles before. They have this perfectly round shape.
Every circle has a center, which is a point that lies exactly at the... well... center of the circle. A circle is a shape where the distance from the center to the edge of the circle is always the same. In order to calculate the radius, you need the circumferance or the diameter.