Answer:
87.9646 millimeters.
Explanation:
The circumference (C) of a circle is given by the formula:
C = πd
Where d is the diameter of the circle and π (pi) is a mathematical constant approximately equal to: 3.14159.
In this case, the diameter of the circle is given as 28 millimeters, so we can substitute this value into the formula to find the circumference:
C = πd = π(28 mm) = 87.9646 mm (rounded to 4 decimal places)
Therefore, the circumference of the circle is approximately 87.9646 millimeters.