"It's a circle. The final hem circumference is determined by the waist size and the length of the skirt. Take the waist measurement, add an inch. Take a large piece of paper (newsprint is good for this). Draw a quarter circle in one corner (centered on the corner) with a radius of the waist measurement divided by 6 (it's an approximation - you can do the real math if you want, but this is close enough). Measure down from that line however long you want the skirt to be. Draw another quarter circle that far away from your first line. Viola -- circle skirt pattern. (You could do it directly on the fabric if you wanted to. Just remember to cut a waistband.)"
Several have said you meant to say 4 instead of 6 - and diameter instead of radius. Both my wife and I have spent a long time reading over your reply, and we're wondering which is correct, because if you meant to say 4, you wouldn't have gone on to say "(it's an approximation - you can do the real math if you want, but this is close enough)" - which makes me think there's more to this than people are recognising. But at the same time, I can see what they're saying, you don't need more than 4 quarter, or two halves.
Something's getting lost in translation here.
Allan.