What is the circumference of a circle with an arc measurement of 30 degrees?

Question

This was a question on my math Praxis, not sure how to figure it out.

Answer 1

Not enough information. A circle of any circumference can have an arc subtended in it by an angle of 30 degrees.  The equation states that "Angle measure of arc/360 degrees = Arc length/circumference". Meaning in order to solve this proportion, we need the arc length, and would represent circumference as our variable/unknown.

Answer 2

We need more information.  30 degrees is 1/12 of a whole circle, because 1/12 of 360 degrees is 30 degrees, but unless we know how many inches, centimeters, or whatever that the 30 degrees measures, we don't know how big the 30 degrees actually is, and how big the circle is.