You are given P(-3, 2), Q(3, 1), R(0,6). Find the coordinates of A, so that the distance between P and A, Q and A, and R and A are all the same.

I'm a little confused at where I should start. I tried graphing it, but I'm not sure where to put "A". Would A be in the center of all the points? If so, how should I accomplish that? I don't want your answer to the problem, just the steps I need to take. Thanks in advance.