|
|
|
|
|||||
|
||||||
From: Don White (no email)
Date: Sun Mar 02 2003 - 23:06:21 EST
To get the radius.
1. draw a cord ( straight line) connecting any 2 points on the arc.
2. draw 2 somewhat larger circles with centers at the end of each cord.
3. draw a line between the 2 points where the circles intersect. This line
will be perpendicular and will go through the center of the arc's circle.
4. repeat steps 1 - 3 for 2 other points on the arc. The 2 straight lines
will now intersect at the center of the circle.
5. Measure the lenth of the radius and the length of the original cord.
6. I'll send an attached Excel spreadsheet off line. Plug in the 2
measurements and it will give you the length of the arc.
----Original Message Follows----
From:
To:
Subject: lv-ab: Question
Date: Sun, 2 Mar 2003 22:01:55 EST
I have a geometry problem.
Imagine two horizontal lines, one straight and one curved, a few inches
long,
sorta parallel with the ends of each line touching the other. Like you
sliced a piece of the crust of a pizza off and the sliced-off piece is lying
on the table.
I know the length of the straight line that the knife cut, and I know the
distance apart the lines are in the middle of the sliced off pizza crust,
how
do I find the length of the curved line?
Norm
_________________________________________________________________
The new MSN 8: advanced junk mail protection and 2 months FREE*
http://join.msn.com/?page=features/junkmail
___________________________________________________________________________
|| The Live-Aboard List : send a "subscribe" or "unsubscribe" request ||
|| in body of message to: ||
|