Greetings Legacychampion,
We see that you're wanting to figure out how to adjust the print size of photos and documents from your iPad, so let's see how we can help with this.
We understand how having a photo or document cropped can ruin the photo or document, so we'd recommend getting started by taking a look at the following resource to see if this helps with what you're experiencing:
Use AirPrint to print from your iPhone, iPad, or iPod touch
If that isn't helpful, it would be best to check the settings of the printer that you're using to see if you're able to adjust those as the settings are dependent on the printer that you're using. If you're unfamiliar with how to access those settings, it would be best to check the support website for the printer that you have to see if you're able to locate some information on adjust this.
We hope you're able to adjust the settings to be able to print to the size of your liking.
Cheers!