Respuesta :

Answer: radius is 3/8 and circumfrance is 3/4

Step-by-step explanation:

9/64pi=r^2pi

/pi             /pi

9/64=r^2

root9/64 rootr^2

3/8=r

Circumfrance= r*2

circumfrance= 3/8*2

Circumrance= 3/4