It will finish at 46" x 60" with 3" borders attached, 40" x 54" without.
Fabric Requirements:
Background: 3 yards (Choose something that contrasts nicely with your other fabrics so you can see your piecing. It typically works better if you avoid large-scale prints.)
Black and White Solid: 1/8 yard of each
20 Coordinating 1/4 yards (such as a fat quarter bundle)