Lisa, you caught me asking

No offense intended, you know!
But you said 80 yards and then sounded like you weren't sure if that was right or not. I couldn't find any doll info/instructions that had amount of hair in it on the web. So I was hoping for somebody else who makes dolls to chime in here for a second opinion.
I'm thinking if the finished mermaid has hair that's say 1 foot long, 80 yards would be 120 strands that are 2 feet long to sew down the center into a wig, right?