How do you defeat bowser 3 to rescue princess peach in nintendo 64 ds?

To defeat Bowser in Super Mario 64 DS, you need to collect enough Power Stars to unlock the door to his level. In the final battle, Dodge his fireballs and wait for him to slam down, then grab his tail and swing him around. Aim for the bombs scattered around the arena to throw him into them. Repeat this process until Bowser is defeated to rescue Princess Peach.