sudo: /rm-r: command not found

I have three folders in my trash that will not delete. "The operation cannot be completed because 'name of my folder' is in use."

I tried in Safe Mode, as well as use Delete Immediately, all with no change.

Lastly I tried in terminal by running sudo: /rm-r and dragging one of the folders into terminal. I hit Enter and get

sudo: /rm-r: command not found

in my /bin file i do see rm so I try sudo: /bin/rm-r and still get

sudo: /bin/rm-r: command not found

I'm concerned that there is now a bigger issue than just the folders not being able to be deleted if I can't run rm.

Any ideas?