Try to get some type of communication going first- how do you know her? Is she a friend of a friend, classmate, coworker? There has to be some common thread. Try to make some small talk and go from there. Once she is aware of you and you both can have a conversation about your day or whatever small interest you might share, then skip the "hanging out" bullshit and ask her on a date. That's the whole point of the date, to get to know her on a more personal level. I used to hang out with my FRIENDS (male and female) before I was married. If I hung out with a female friend, I had no interest in dating her. When I met the girl that became my wife it was through a mutual friend. I met her through this friend by chance, talked about a few things (music/movies), and after 3 days of this through phone calls, I asked her out on a date and got to know her on a personal level, and went from there.