From the circle, we can deduce that:
Radius of the circle, r = 3 mm
Let's find the diameter of the circle.
To find the diameter of the circle, apply the formula:
d = 2 x r
Where:
d is the diameter
r is the radius
Thus, we have:
d = 2 x 3 = 6 mm
Therefore, the diameter of the circle is 6 mm.
ANSWER:
6 mm