How do i extract this file?

I extracted a rar file, then i see more rar files, ios0915a, ios0915b all the way to ios0915q. There is also file_id.diz file and iospda file. When i open ios0915a there is a file called ios09150 as well as file_id.diz and iospda. So i click on ios09150 and then i see the iPhone game .ipa file i want, i try to extract it but it says i need C:\********\Temp\Rar$DI29.648\ios09150.r00
Answer #1
This is a rar archive volume.such as .r00,.r01,.r02
move the all volume of archive in a folder.
And Then extract it.