How would I fix a bent on/off button and volume button?

So I recently dropped my Samsung tablet on the floor from a couple of feet.

I saw that the on/off button and volume button were severely bent, and that was because the small part of the silver case - thing around the buttons was bent.

This wouldn't be a problem except that my tablet just lost all of it's battery, and I have no way to turn it back on.

So how could I fix that?