Q: My ipad shows 12.gb used storage, but I have not used that much storate. Where is the storage gone?

Hello nilu_shiv,

Welcome to the Apple Support Communities!

I understand that you are running out of storage on your iPad and would like to know what is using it. In this situation, I would recommend reading over the attached article for helpful information on how to see where your storage space is being used. There are helpful links at the bottom of the article as well that are helpful in removing content from your device to free up more storage. 

See how much storage you've used on your iPhone, iPad, and iPod touch - Apple Support

Have a great day,

Joe