I thinkk she means there's only 32 once when you subtract from it, so you can only do it once i assume
Plus it costs less in material (33% reduction) to make a round cover with the same diameter as its equivalent square cover.
A traveler arrives in a small town and decides he wants to get a haircut. There are only two barbershops in town - one on East Street and one on West Street. The East Street barbershop is a mess, and the barber has the worst haircut the traveler has ever seen. The West Street barbershop is neat and clean, its barber's hair looks as good as a movie star's. Which barbershop does the traveler go to for his haircut, and why?