Setting CENTOS

[searcheu]

I user CentOS 6.3 x86_64 Minimal v2
I unrar and rar file 70MB
but after I rar file 295MB
I dont understand because I unrar and rar in windown file 70MB --> 72MB
I want setting CENTOS after file rar file 70MB have <100MB
exam file :

http://www24.zippyshare.com/v/66321006/file.html
http://ul.to/01i1hujj

Thanks