Translation of perimeter in Spanish

For each entry, there will be the translations of the dictionary, so if one entry is already included there is no extra value in adding this word and I'd say mark it as an error although it is correct.
Everything in your letter is perfect! Almost no errors and the writing style, very impressive! After this first year in England, you have also improved your vocabulary and the grammar skills.
First of all I like to visit different places - but I like national parks, beautiful landscapes and unspoilt places in any country. Pure nature. We live in Dusseldorf - in the north of Germany.