can I use ipad with android

There may be other options but what I would do is install Google Mail and Google Calendar apps on my iPad (they are available in the Apple App Store) and sign into them with the same sign in that you use for them on your Android. They will automatically sync.

Also see the information in https://support.google.com/calendar/answer/151674?hl=en&co=GENIE.Platform%3DiOS&oco=0

including the following:

The easiest way to sync your events is to download the official Google Calendar app. If you'd prefer to use the calendar app already on your iPhone or iPad, you can sync your events with Apple Calendar.

If you want to sync with Apple Calendar instead of using Google Calendar on your iPad, see: https://support.google.com/calendar/answer/99358?sjid=5966158790997952691-NC&co=GENIE.Platform%3DiOS&oco=0

You can add your gmail account to the iPad to see the contents of the Calendar, email, notes and contacts stored on your Google account on your iPad.

Go to Settings ➜ Mail ➜ Accounts ➜ Add Account and select Google form the options.

Then turn on the switches for the other services.

click here ➜ Set up mail, contacts, and calendar accounts on iPad - Apple Support