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Guest imported_Tesseract

Tesseract needs a geometry lesson...

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Guest imported_Tesseract

O.K. many of you still go to school and i am sure many just remember this stuff.

I need to find the perimeter of a circle. i remember something like 2xpi(3,14)square.but i am not sure.

You'll have to excuse my stupid english and try to understand what i mean...thanx

Reward:a Tesseract drawing

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Guest THE LAW

it's been a long time since THE LAW calculated the circumference of a circle.

 

try (2) times (pi) times (the radius of the circle).

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Guest imported_Tesseract

you guys sure that square of something is not involved?

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Guest THE LAW

if you are trying to compute the AREA of a circle, use smart's equation. That has a square.....perimeter/circumference does not.

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Guest --zeSto--

Here's the definitive math...

 

diameter = 2 x radius of circle

Circumference of Circle = PI x diameter = 2 PI x radius

where PI = = 3.141592...

 

Area of Circle:

area = PI r2

 

arc: a curved line that is part of the circumference of a circle

chord: a line segment within a circle that touches 2 points on the circle.

circumference: the distance around the circle.

diameter: the longest distance from one end of a circle to the other.

origin: the center of the circle

pi (): A number, 3.141592..., equal to (the circumference) / (the diameter) of any circle.

radius: distance from center of circle to any point on it.

sector: is like a slice of pie (a circle wedge).

tangent of circle: a line perpendicular to the radius that touches ONLY one point on the circle

 

 

http://www.sisweb.com/math/geometry/circles.htm'>

 

I want that drawing

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but you CAN NOT do it Zesto's way, doubling Pi and multiplying but that leaves more opportunity for error, as you calculate Pi out to further decimal places, so if you're doing it for class, all 3 word but if you're building a tower, best to stick to the first 2 ways...

 

and if all of this is gonna be on a test soon, be assured that they will almost always try to trick you on one question by supplying the diameter instead of the radius, be aware...

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Guest --zeSto--

hey smrt...

"PI x diameter = 2 PI x radius"

the above statement is correct.

Sure PI*2 is too risky to calculate,

but just try to prove it false... Dare Ya!

 

 

 

oh... this is PI

 

PI = 3. 1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 ...

 

Vieta's Formula

2/PI = 2/2 * ( 2 + 2 )/2 * (2 + ( ( 2 + 2) ) )/2 * ...c

 

 

Leibnitz's Formula

PI/4 = 1/1 - 1/3 + 1/5 - 1/7 + ...

 

 

Wallis Product

PI/2 = 2/1 * 2/3 * 4/3 * 4/5 * 6/5 * 6/7 * ...

2/PI = (1 - 1/22)(1 - 1/42)(1 - 1/62)...

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Guest imported_Tesseract

OK i tied it,

http://www.yourphotos.com/users/2809/ACF4A3C.jpg'>

This circle has a radius of 2cm

applying the:

PI x diameter = 2 PI x radius

we have 6,28 x 2 = 8,28

So the Circumference of this Circle is 8,28

Right? seems ok with the eye.

Thank you all for the help and the quick responce to this.

Here's a frame from my Tesseract animation for you all:)

http://www.yourphotos.com/users/2809/tesseract.jpg'>

Special thanx to Zesto and smart for the amount of info.

Its not for a test (i finished school 6 years ago) either a building. Its for a canvas i'm working on.

Since Zesto is the only one that showed interest on the prize plus he made his piece of info really simplified for my notknowing good english brain we wins it.Check your mail later on the day.

Thanx to y'all again.

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Guest bug
Originally posted by Tesseract

you guys sure that square of something is not involved?

 

2pir for the circumference (perimeter)

 

pir ^2 for the area.

 

using differential calculus shows this relationship.

 

that's also how you get volume of a sphere: (pir ^3)/3

 

bug=math genius

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Guest --zeSto--

oh yeah bug...

 

sphere = 4 pi r 2

 

that's how you get surface area of said sphere

 

and volume = (4/3) pi r 3 = what you said.

 

we be so smart... s m r t ... d'oh

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http://www.ratemyface.com/pictures/PinkieKitten.jpg'>

OHHH YES WHAT AN UNFORTUNATE MORON WE HAVE HERE!! WEEE!!! LETS ANALYZE!!

 

PICTURE ONE = "LET ME KISS NOTIHNG BECAUSE I AM SUCH A FUCKING MORON NOTHING ELSE WOULD DARE GET IN FRONT OF THESE LIPS SO I SHALL NOW TAINT THE OXYGEN WITH DEATH!"

 

PICTURE TWO = OHHHHHHH WOW WHITE GLARE BLAST ON YOUR FACE! BUY YOUR MOM A STAB MACHINE TO STAB YOU IN THE FOREHEAD!!

 

PICTURE THREE = "COOL MAN! I WEAR GLASSES1 WEEE HARDKORE KEWTIE 800!" INCORRECT YOU FUCKIN TURTLENECK DISEASE OBTAINER.

 

PICTURE FOUR = OH MY FUCKING FACE!!!!! YOU HAVE PIERCINGS?!?!? WOW CONSIDER YOURSELF FUCKIN ASTONISHING! I WILL TIE THOSE 2 PIERCINGS TOGETHER, RIP THEM OUT FOR YOUR FACE, AND THEN FORCE YOU TO SWALLOW THEM! TINKLE ON YOUR FACE NEEDLE DICK!!!

 

PICTURE FIVE = AWWW YOU ARE A CUTE GOTH GIRL! NO! HAHAHAHA JOKE FOR EVERYONE! GRRRR FUCK YOU!!! BAD PICTURE UNTALENTED IDIOT!

 

PICTURE SIX = OH WHAT THE FUCK IS WRONG!? REALIZED YOUR FUCKIN CHIN IS ABOUT TO FALL OFF? AWWWWWW TOO BAD TEETH GODDESS.

 

PICTURE SEVEN = TOTALLY MAGNIFICENT! YOU OWN GLASS CUPS! OOOOOOOKIE OOOOOOOOOOOKIE! KICK ME IN THE NUTS! I THINK YOU ARE DEEP BECAUSE OF YOUR CUPS! HOCK SPIT ON YOUR FACE!

 

PICTURE EIGHT = GROSSEST FUCKING FACE I HAVE EVER SEEN. PUNCH FOR YOU! SURPRISE!

 

PICTURE NINE = OOH MISCHEVIOUS GURL! ACKY ACKY ACK FUCK YOU! PISS ALL OVER YOUR HOUSE!!

 

I AM BACK EVERYONE. PREPARE FOR MISERY.

 

SPITOONN

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I spent the nessisary hours at home calculateing pi to 50,000 decimal places, i hope you enjoy this personal sacrifice.

 

3.

141592653589793238462643383279502884197169399375105820974944

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893226185489632132933089857064204675259070915481416549859461

637180270981994309924488957571282

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