Q: Ipad 3 connected but no browsing

Are you referring to your home Wi-Fi? Is this a Wi-Fi only iPad? What other troubleshooting have you tried besides resetting network settings? Do you have any other devices that connect to the network and work?

Not necessarily. Go back to Settings and forget the network. Then power cycle your router. Disconnect it from power for about 30 seconds and then reconnect it. After the router has finished rebooting, attempt to connect the iPad.

I suggest making a backup of the device and then restore. However, restore as new, and before adding any additional content back to the device, test the Wi-Fi. If it works, then restore your backup.

Nothing? You cannot access anything in Safari, retrieve mail, nothing? I suggest you make an appointment at the Genius Bar of the nearest Apple store to have the device evaluated.