The first is much closer to the British pronunciation, which (I think) is much more deserving of the spelling "centre" than the second "cener".
https://en.wiktionary.org/wiki/center#Pronunciation
The first is much closer to the British pronunciation, which (I think) is much more deserving of the spelling "centre" than the second "cener".
https://en.wiktionary.org/wiki/center#Pronunciation