What is the diameter of this circle if the circumference is 30pi inches

A. 15 in

B. 30in

C. 45in

D. 60in

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

Step-by-step explanation:

Circumference = π*diameter

30π=π*diameter

Diameter=30π:π

Diameter=30in