Respuesta :
The answer is B
C=2pieR
if C=10pie
then you have to devide 10 by 2
C=2pieR
if C=10pie
then you have to devide 10 by 2
Answer is B 5 cm is correct. C=πd; thus, d=C/π. therefore, d=10π π=10; 2r=d; 2r=10; r= 5 cm