3 yds of 110" wide fabric will give you a piece that is 110" x 108" (36x3= 108) the width is salvage to salvage- the cut is how many yards you order. so- 2 1/2 yd= 90" (2 yds= 72" + 1/2 yd= 18" ...72+18= 90)...if you buy 3 yds you will have some extra to save for a future project