LB: Matzos are made differently so the circumference is not uniform. Also there are thin and thick matzos (relative terms). Some bakeries have 6 matzos to a pound (relatively “thick”) and some have 9 or 10 matzos to a pound (relatively “thin”). The thinner the matzo, more of the matzo has to be eaten to satisfy the measurement of a “kezayis” (size of an olive). The friendswithdiabetes dot org website has a chart for this.
Moderators: here are the actual links if you will allow it. I know the rules. Since it is for a mitzvah….