OT: In need of a math whiz

[JTarver]

I've said it before, I'll say it again. Math was invented by people who are afraid of snakes.

Joe

[Jody]

Ok, now I am pushing it, I know. But how about a 6 foot rug?

Sorry----I still don't know how to compute it for myself...

[JTarver]

I got this one...6 ft. rug. 12" per foot....72 inches. WOOHOO! Call NASA, tell em I'm on mah way to werk on some rockits!



Now what about this equation:

http://www.youtube.com/watch?v=rzcLQRXW6B0" onclick="window.open(this.href);return false;

Peace,
Joe

[Jody]

I think we need to call on Fish and let him take a turn.

[Rotifer Thalweg]

I think we need to call on Fish and let him take a turn.

Fish can't hijack coconuts any better than swallows can. C'mon honey pipes - maintain focus.

[davidbob]

I can't do the calculation,* but I can sue anyone who screws it up.

* The RBF does not do math, an activity better suited for pencil neck geeks with pocket protectors than fat hairy men who can only count in multiples of six. I've seen Satch stand in a daze for hours staring at the "Take a penny - Leave a penny" tray at Turner Bend. kenny hasn't counted past 10 since the last time he was able to see his toes. The numerical correlation between the big hand and the little hand still confuses nephew Mikey (that's understandable: Mikey thinks "analog" is a word you use to describe the cause of your injury to the gynecologist before he sews up your gaping head wound ("As I was helping clean up Beaver Pond I turned around analog hit me in the head")). Besides, when the grid goes down we'll need guns and guile to survive, not floor covering or slide rules.

[Michele Jackson]

OK - I'll let my geekiness shine thru ONE more time. But, I'll also give you the formula to figure out future octagonal rugs yourself.

If the 6 ft dimension is measured from flat side to flat side, one edge will measure 29.8 inches. (I'm guessing this is how the rug is measured)

However, if the 6 ft dimension is measured from corner to corner (a slightly smaller rug), one edge will measure 27.5 inches.

For any octagonal rug size do this:
Determine one half of the diameter, in inches. For a 6 ft rug, half = 36 inches. This number is the "rad" in the following formulas (for radius).

If the rug is measured from flat edge to flat edge use this formula:
rad * .4142 * 2 = the length of one edge.
Example: for a six foot rug: 36 * .4142 * 2 = 29.8 inches
For a rug that is 7'10": 47 * .4142 * 2 = 38.9 inches

If the rug is measured from corner to corner use this formula:
rad * .3827 * 2 = the length of one edge.
Example: for a six foot rug: 36 * .3827 * 2 = 27.55 inches.
For a rug that is 7'10": 47 * .3827 * 2 = 35.97 inches.

Happy rug shopping!

(these formulas only work for octagonal shaped rugs)

If these calculations are wrong, I reserve the right to hire Davidbob to defend me.

[Jody]

Meesh, thank you SO much! You really helped me decide on the size of rug I need. This is for my group therapy room and I wanted each chair to have it's own space. So it needs 3 feet--hence, the smaller rug won't do.

Thanks to all for putting up with such an Off-Topic post, but isn't it good to know we have the resources of the ACC for all our needs?

[Michele Jackson]

Glad I could help Jody. I'm happy to know I'll have plenty of elbow room during my future therapy sessions. :)

[Jody]

RIGHT!


Now which group are we going to put you in?....let's see....oh. here it is! Hydrotherapy addicts anonymous!

We can get this thread right back on topic in no time.

[Sasquatch]

A circle divided into 8 segments yields 8 triangles. Each of those triangles is an isoscoles triangle with two sides of 47" long, one angle of 45 degrees and two angles of 67.5 degrees. You want to know the length of the third side. If you split the triangle into two smaller triangle each with a 90 degree angle then you can use the sine, cosine rules.

To double-check the answer you can also determine the overall circumference of the circle using 2*pi*r and divide it by 8. That yields 36.9 with is slightly larger than than 35.97, which makes sense.

Got it?

The LOWER case a!!!!!!!!!!!! my head is about to explode Michele. Pie R square corn bread R round?

[Jody]

No kidding, Satch! I knew Michele was a brainiac but wow!

[scoutdad]

Michele Jackson wrote:
A circle divided into 8 segments yields 8 triangles. Each of those triangles is an isoscoles triangle with two sides of 47" long, one angle of 45 degrees and two angles of 67.5 degrees. You want to know the length of the third side. If you split the triangle into two smaller triangle each with a 90 degree angle then you can use the sine, cosine rules.

To double-check the answer you can also determine the overall circumference of the circle using 2*pi*r and divide it by 8. That yields 36.9 with is slightly larger than than 35.97, which makes sense.

Got it?

Thats what i was trying to do in my earlier post but my triangle just aint right!