The circumference of a circle equals to 2 x pi x radius.
To find the radius we can substitute the value of 37.7 in and use 3.14 as pi.
37.7 = 2 x 3.14 x radius
37.7 = 6.28 x radius
(377/10) x (100/628) = radius
1885/314=radius
The length of the radius is approximately 6 cm.