Rosa Mendes' real name is Milena Roucka so she is not in any way related to Eva Mendes. Also yes it is Milena not Melina.
Eva Mendes is a actress.
about 60killos
1000000000 kg
About 173 lbs in this picture: http://www.entertainmentwise.com/photos/46638/5/celebrities-get-a-fat-makeover#gallery