Answer:
r = 18/pi
or approximately 5.7325 inches
Explanation:
The circumference is given by
C = 2*pi*r
36 = 2*pi*r
Divide each side by 2 pi
36/(2pi) = r
18/pi = r
Letting pi = 3.14
18/3.14
5.732484076 = r
1.6m questions
2.0m answers