Steve:
Fast and dirty - I agree with previous posts a jig saw with a fine tooth blade. You will have tear out though but it is easily hidden by turning that face down.
Cabinet makers method - a circle cutting jig and a band saw with the proper blade. You will get almost perfect curves and all will be exactly the same. Cut the outside arcs first, reposition the jig and cut the inside arcs. Depending on the blade you may still get some tear out.
Joe