To find the circumference of a circle, you can use the formula:
C = πd
where C is the circumference and d is the diameter of the circle.
In this case, the diameter is given as 22. Plugging in this value:
C = π × 22
Now, using the approximate value of π (which is about 3.14), we can calculate:
C ≈ 3.14 × 22 = 68.28
Therefore, the circumference of a circle with a diameter of 22 is approximately 68.28 units.