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Posts posted by Freeman
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Well, no. If you have a circle, then have a line go through the circle, through any two points on the circle, in one end and out the other, i.e. NOT TANGENT, then you could find the center of that line with a protractor measured at the length of the line, put on one end then measure above and below the line and do the same on the other point. The two hemi-circles will intersect and use your handy straight edge to make a perpindicular bisector, this is the diameter. Then, find the center of this line with the same method of the protractor, measure above and below, find the perpindicular bisector and THAT is the center of the circle. I call it the freeman theorum.Measuring the diameter and dividing by two won't be very accurate. You need to be sure that the line crosses exactly through the centre of the circle. The summary of the question asked how to locate the centre or a circle of unknown radius as well as how to find the radius. Even if you had the radius already it's still gonna be hit and miss measuring to the exact center of the circle.0 -
C'mon, make it pro bono!!!
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Lemme see where to begin.... take the circumferance of the circle. [math]C=D\pi[/math] This is very important, but I will show you why later.
And the area of the circle would be [math]A=r^2\pi[/math], that too is the area of the square, correct?
Therefore, the side of the square MUST be [math]r\sqrt{\pi}[/math], correct?
Well, remember the Circumferance? Well, Squareroot it. [math]\sqrt{D\pi}[/math], and squareroot the diameter on its own too. Now, plug it in [math]\sqrt{D\pi/D}=\sqrt{\pi}[/math] Multiply by the radius, which we began with! Is this not correct???
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Put a line anywhere that goes through the circle. Use a protractor to get the perpindicular bisector and extend it through the circle. Find the center of that line, and THAT is the center of the circle.
I was a pizza dude and I wanted to put the funky table in the EXACT center, and that was my formula.
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That's all I have! I would like to see the proof proving squaring a circle is impossible, does anyone have a link?Well, it's been proven to be impossible, so unless you want to waste a lot of time...0 -
Are there any negative effects of caffeine???
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Yeah, I can't trisect an angle!!! But, I have other ways around it...
In theory its impossible, but I got bored, so we're all going to find out, won't we?Is it squaring a circle or squaring a triangle that's impossible?0 -
Never mind, I found out how to multiply two lines togather.
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Squaring a circle is when you have a circle with a certain area, and with nothing but a straight-edge and compass, one tries to calculate the dimensions of a square with the same area as the circle.
I have a line that is pi units in length, and I need to multiply it by a line 6 units in length in a construction, but I don't know where I can find the construction online!!! Aghh!!!
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I am almost done squaring a circle, but I need to know how to multiply two lines togather. Does anyone know how to???
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I found a book called "standing on the shoulders of giants" by Prof. Hawking, has anyone heard of it? It looks interesting, there's the works of Newton, Einstein, Galileo, and -I believe it is- Ptolemy(?).
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Does anyone know any good books or websites that explain gravity and electromagnitivity well?
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I doubt if the "government" would last until 2005. If the interim government does anything the US doesn't want it to do, I am willing to bet that the US will intervene for "domestic security".
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