correct my sentences

I am book. I have been used for many purposes. I could be missing after a 10 decades because of internet facility.

Is there any word to replace in place of `missing' and `10 decades'?

Also, correct my sentences.

Quote:

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Originally Posted by user_gary

I am book. I have been used for many purposes. I could be missing after a 10 decades because of internet facility.

Is there any word to replace in place of `missing' and `10 decades'?

Also, correct my sentences.

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I am a book.

10 decades - a century, hundred years

'missing' in what sense? Meaning 'useless'?

Quote:

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Originally Posted by queenbu

I am a book.

10 decades - a century, hundred years

'missing' in what sense? Meaning 'useless'?

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Thank you.

missing I mean (unavailable)

obsolete?