my ipad was stolen

Here is Apple’s advice for lost or stolen devices - including actions that you should perform:

If your iPhone, iPad or iPod touch is lost or stolen – Apple Support

Use the Find My app to locate a lost or stolen device – Apple Support

If the Find My iPad feature was enabled prior to it being “misplaced” and the iPad still has an active network connection, you would have a good chance of locating it. 

However, if the feature was not activated prior to being misplaced - or the iPad has been inactive for more than 24 hours, the last known location will not be available - and the opportunity to use technical means to recover the iPad have been lost.

ghartjen Said:

"my ipad was stolen: i have apple care plus is my ipad covered under that"

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No. Theft is not covered by AppleCare+

Being Stollen, Modify your Credentials:

Having been stollen, consider modifying your credentials, ASAP, starting with a new password.

• Modify: your login credentials (Using Both a New eMail and a New Password for each and all sites)
• Associate: a different method of payment to your account
• Enable: Two-Factor Authentication for Apple ID and for all other accounts that have such an applicable option