The bridge builders have come back with a spreadsheet titled "Segments of Circles". You can put in any two of the arc length, chord length, radius, height, angle, apothem and area and it will give the rest. If we could put up attachments I'd add it for ya! I'm not quite sure how it works for our situation though. To many big words.

If only I continued my Mech Engineering degree. I for some reason switch to business, then architecture, then education, and finally just turned into a web/video/graphics guy. Oh well!