Since the printer connects to your wireless network, it's easy to get its IP by logging in to the router interface. Navigate to Wireless section and click on the Wireless DHCP clients and then you will see the assigned IP for the printer.
To get IP of the router, please go to Start > Run > type cmd then Enter. Input ipconfig|findstr Gate then manually type that IP into a browser and log in to the router's interface. The password for your router is found in the manual or it is usually admin/admin.