I think you ment the other Rose but I will answer.
Fat quarters are made by cuting a 1 yd piece into 4 pieces that should measure 18 in by 22 in but they do cheat on you sometimes. Yes I wash fats but not charms (5 in squares of a line of fabric). Layer cakes are a line of 10 in squares.
Jelly rolls are a line cut into 2 1/2 in strips that are cut from selvage edge to sevage edge.
Your more quality fabric companeys give you about 42 cuts of a line of fabrics.