Respuesta :

Answer:

Step-by-step explanation:

Circumference =π×diameter

30π=π×diameter

Diameter=30π÷π

Diameter=30in

B. 30 inches

Reason:
The radius of the circle would be 15pi because 30pi divided by 2 would be 15pi (the formula for circumference is 2 x pi x radius). Diameter would be 2x the radius, so 15pi x 2 = diameter = 30