The stylus will travel by one circumference of the disc every 1/45 or 1/33 minutes- this will be pi x 12" at the outside of the record, and about pi x 8" when it gets to the label. So the length of groove covered by the stylus in one revolution (and hence its velocity) is about 1.5 times greater at the ouside of the record.
Turntables have constant angular velocity (constant RPM, varying stylus speed relative to the medium);
CD players have constant linear velocity (varying RPM, constant head speed relative to the medium).
