Question 663534
The circumference of a circle (c) is equal to the radius(r) times 2 pi.
{{{c = 2*pi*r}}}
{{{38 = 2*pi*r}}}
{{{38/2 = (2*pi*r)/2}}}
{{{19 = pi*r}}}
{{{19/pi = (pi*r)/pi}}}
{{{19/pi = r}}}
{{{r = 19/pi}}} cm