Answer:
K.48
Explanation:
First convert everything into inches, since that's the unit of the answer. 3 ft = 36 inches.
The finished tablecloth needs to hang down 5 inches. That means even after Kirk has sewn the 1 inch of material down, the tablecloth needs to hang down 5 inches. Which means we need 6 additional inches of material (6 - 1 = 5), giving us a circle of fabric of radius 24 in (18 + 6). The diameter is then 48 inches.
What that means is that our tablecloth is a circle of fabric 48 inches in diameter. The rectangular fabric's width is more than enough, but its width must be 48 inches or greater to accommodate the 48 in diameter circle.