How to Use "circumference" with Example Sentences

1. That number includes only islands with a circumference of at least 100 meters , or yards .
2. When would I ever need to compute the circumference of a circle ?
3. The area was once enclosed by a city wall that was 10m high and five kilometres in circumference , built in 1555 and torn down in 1911 .
4. He then estimated the distance between the two locations and multiplied by 50 to derive the circumference .
5. The physics of the small requires big machines : the lhc is a ring with a circumference of 27km ( 17 miles ) .