Answer: The circumference of the cutter is approximately 119.32 millimeters.
Step-by-step explanation: The formula for the circumference of a circle is C=2πr, where C is the circumference, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.
In this problem, the radius of the circular cutter is given as 19 millimeters, so we can substitute that value into the formula:
C = 2πr
C = 2 × 3.14 × 19
C = 119.32
Rounding to the nearest hundredth, we get:
C ≈ 119.32 millimeters
Therefore, the circumference of the cutter is approximately 119.32 millimeters.