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steelcomp
06-11-2006, 06:00 PM
If I have a chord that intersects a circle that is 11.25" long, and the height of the segment of the circle above the chord is 1.06", can you figure the radius of the circle?? :idea:

LakeRacer
06-11-2006, 06:10 PM
If I have a chord that intersects a circle that is 11.25" long, and the height of the segment of the circle above the chord is 1.06", can you figure the radius of the circle?? :idea:
1.29 feet or 1ft 3-1/2in

Rexone
06-11-2006, 06:11 PM
My brain hurts.

bordsmnj
06-11-2006, 06:16 PM
scratch my answer- wrong formula :220v:

YeLLowBoaT
06-11-2006, 06:16 PM
1.29 feet or 1ft 3-1/2in
that is not even close....
There is only 1 circle that you can have those Numbers for, I just have to remember how to do it.... ( sucks having a masters in math and can't remember sh*t) let me go grab a text book.

Froggystyle
06-11-2006, 06:32 PM
15.45482311" radius.
Incidentally, that would be 1.287 feet (round to 1.29) or roughly 1' 3.5", so our prior contestant was actually correct, and very close... ;)

YeLLowBoaT
06-11-2006, 06:34 PM
After checking, it is not possiable to calculate it. It is poss to keep pluing in # for R till you get the right one...Now there may be some method I don't know about, but interpolation will work.

bordsmnj
06-11-2006, 06:35 PM
still wrong here. found the right formula though.

JetBoatRich
06-11-2006, 06:35 PM
why is the cord crossing the circle :)

bordsmnj
06-11-2006, 06:36 PM
to lay an egg?

JetBoatRich
06-11-2006, 06:36 PM
why is the chord intersecting the circle :)

Froggystyle
06-11-2006, 06:36 PM
After checking, it is not possiable to calculate it. It is poss to keep pluing in # for R till you get the right one...Now there may be some method I don't know about, but interpolation will work.
Solidworks doesn't have any problem doing it... :D
http://www.highperformancecars.com/froggystyle/circle_jerk.jpg

YeLLowBoaT
06-11-2006, 06:38 PM
Solidworks doesn't have any problem doing it... :D
http://www.highperformancecars.com/froggystyle/circle_jerk.jpg
That s bcuz all they are doing is pluing in numbers......

bordsmnj
06-11-2006, 06:39 PM
Steelcomp please be more specific . i believe we all here still have the phone a freind option and also the wrong answer elimination option.

steelcomp
06-11-2006, 06:48 PM
Guys...GUYS!!! Whew!
OK...the chord intersects the circle...if the chord was the dia it wouldn't be a chord. If I knew the dia, I'd know the R. I looked into all the formulas I could find but they all wanted a value for R.
The chord is intersecting the circle, because that's what represents the cross section of the center of my keel. I'm trying to figure the radius of the bottom of my keel so I can make a template. I know how far it is from one side to the other (11.25")m, and I know how tall it is at that width (1.06") and I was hoping someone could help me figure the R from those two numbers.
Thanks Froggy, LakeRacer.

Old Guy
06-11-2006, 07:02 PM
R = 15.4548"
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Froggystyle
06-11-2006, 07:03 PM
In that case go with my ( and lakeracers) answer. That is correct.

Mandelon
06-11-2006, 07:05 PM
P r squared. No wait. Pi aren't square. Pie are round. :rollside:

bordsmnj
06-11-2006, 07:18 PM
i found a section of text on how this works and thank god for computers. that text made me sleepy. grads,radians,angular displacemewnt :yuk:

bottom feeder
06-11-2006, 07:29 PM
R = 15.4548"
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LHC30Victory
06-11-2006, 07:37 PM
You guys make me want to go back to school!

hoolign
06-11-2006, 07:49 PM
The answer is ..the chicken came first..and was born on the other side of the road ...so in fact ..he did not need to cross it!

Tom Brown
06-11-2006, 08:15 PM
Hey Hooli, why don't you cruise over to the Dammit Bobin thread and do a head pressure calculation for us.

SnoopJonnyJon
06-11-2006, 08:22 PM
Why did Bobin cross the road??? He had a sexual interest in the chicken.
BTW, way to pull out the solidworks and autocad.... when i read the subject line I was just gonna start up PRO/E. Beat me to it :cool: