The answer is 3:
Step-by-step explanation:
The circumference is basically the perimeter of the circle. To find the circumference, you do diameter • pi. Pi is a number that we use for finding circles. It goes on and on. They are still finding numbers to this day. For most problems, you will use 3.14. In order to find the diameter in this case, you will do circumference divided by pi. Because remember, C = D • pi. From there you will get your diameter. Hope this helps!!