Question

Which is the radius, in centimeters, of a circle that has a circumference of 16 pie centimeters

Answer 1

$\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ -----\\ C=16\pi \end{cases}\implies 16\pi =2\pi r\implies \cfrac{16\pi }{2\pi }=r\implies 8=r$

Answer 2

the radius is 8 cm

8 = r