Answer:
43.982 or 44 (depends if your teacher wants it rounded or not)
Explanation:
C=2(pi)r (I don't know how to type the pi symbol, my apologies)
The radius is the diameter divided by 2
Radius = 14/2 = 7
Radius = 7
Circumference = 2 times pi times 7
Circumference = 43.982
The rounded-up answer would be 44.
Have a great day :)