Misc: the first person to have calculated the value of pi?

Questions

a man's ---------- contains between 7000 and 15,000 hairs?

alberto vo5 hair spray was the world?

amount of time the average man spends ---------- 3350 hours?

amount of time the average man spends shaving ---------- hours?

during the time of peter the great, any russian man who wore a ---------- was required to pay a special tax?