how can i make a cd from apllication in my app store

Export something from an app to cd?

I'm afraid your quesion isn't very clear.

If that's what you're wanting to do, you need to get the file off your iPad and onto your computer. You can use sync or mail it (if it's not big) or use something like dropbox to upload/download it.

But there is no way to make a cd from the iPad. You have to get the file onto a computer with a CD drive

If you are trying to transfer the apps onto CD for backup purposes - that is not necessary. You have other means of backing up apps and data. You can use iTunes on the computer and iCloud to backup.