2. how does beowulf trap and kill grendel?

Beowulf traps and kills Grendel by stripping his clothes off to have it a fair match between the two of them. He killed him repeatedly by beating Grendel up using his fists targeting his ears and that how’s Grendel shrink. Grendel traps from Beowulf chains that tied him to the door where he cut his arms off and let him die.