Respuesta :

Answer:

22.5 cm

Step-by-step explanation:

Answer:

22.5 cm

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r  where r is the radius

The circumference is 45 pi

45pi = 2 * pi *r

Divide each side by 2pi

45pi/2pi =2pi*r/2pi

22.5 = r