Gordon wrote:
This is from the Brian Toss rigging book so if you want to cheat, you
can look it up.

If I string a line around the equator (disregarding natural
obstacles) and then decide I want that line 1 foot above the equator all
the way around, how much longer must that line be? Call the earth's
diameter an even 8000 miles.
G


circumference = pi*d

so difference = (pi*(8000+(1/5280))-(pi*8000)miles