Question

The circumference of a circle is 19πinches. find the radius.c=2πr

Answer 1

hello : 
c=2πr
19 = 2 π r 
r = 19/ 2 π 
 r = 19/ (2×3.14) =19/6.28
r = 3.03 nches

Answer 2

9.5 19÷2=9.5 since the radius is half of diameter