The exact circumference of a circle with a radius of 17 millimeters is:
B. 34

millimeters
This is because to find the circumference of a circle, we can use the formula
C = 2

r
We know that the radius is 17 millimeters.
C = 2

17
When we mutliply 2 and 17, we get 34.
C = 34

Therefore, your answer is B.