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ephmynus
April 7th, 2003, 06:07 PM
This aught to be pretty simple for someone but it's been a while since I've done this stuff. Say I have a square and I want a circle around it (perfectly hugging the corners of the square) how do I find the diameter of the circle if I know the size of the square?
silencio
April 7th, 2003, 06:24 PM
a squared + b squared = c squared
a = box side 1
b = box side 2 (same as a if you can draw a perfect circle around it)
c = hypotenuse = diameter
NooNoo
April 8th, 2003, 07:56 AM
Take the diagonal of the square shape and multiply it by pi.

The formula for finding the circumference of a circle is pi r2

Since the diagonal of your square is also the diameter of the circle which is r2 (radius) you just need to multiply the diagonal by pi (3.14)
Cleetus
April 8th, 2003, 08:33 AM
Take your silly math questions and go to hell, you die, we do not lik you and your doggy anymore!!!! :flame:
Outcoded
April 8th, 2003, 10:23 AM
Draw it and measure it.

OK, what you need is the distance between the centre of the square, and a corner.

Pythagoras say: Square on the hypoteneus = sum of the squares on the other two sides. Longest side = edge of square = Hypoteneus.

Hypoteneus^2 = 2*(distance to corner^2)

So if you do....

square root of((Length of edge^2)/2)

That will give you the number you require.

Noo's method will also work.
WebHead
April 8th, 2003, 07:52 PM
Or you could cheat like I used to by drawing the square in Autocad, then drawing the circle around it then getting the properties of the circle. Hehehe.
Rellik
April 8th, 2003, 09:40 PM
here's a little graphic that may explain it visually
http://www.sharemation.com/rellik/mathy.GIF
silencio
April 8th, 2003, 09:42 PM
Originally posted by Rellik
here's a little graphic that may explain it visually
http://www.sharemation.com/rellik/mathy.GIF

your graphic calls for a login.
silencio
April 8th, 2003, 09:43 PM
Originally posted by Outcoded
Draw it and measure it.

OK, what you need is the distance between the centre of the square, and a corner.

Pythagoras say: Square on the hypoteneus = sum of the squares on the other two sides. Longest side = edge of square = Hypoteneus.

Hypoteneus^2 = 2*(distance to corner^2)

So if you do....

square root of((Length of edge^2)/2)

That will give you the number you require.

Noo's method will also work.

Did I say this?
Outcoded
April 9th, 2003, 04:06 AM
Kinda.
NooNoo
April 9th, 2003, 05:12 AM
A+ have ya figured it out yet, or do you need more methodology?? :D :D :D :D
ephmynus
April 9th, 2003, 07:49 AM
Originally posted by NooNoo
A+ have ya figured it out yet, or do you need more methodology?? :D :D :D :D

Oh, you guys are still talkin about this? :D

No, I'm cool
NooNoo
April 9th, 2003, 07:57 AM
So, who's method did you choose A+ ?? :D :D
confus-ed
April 9th, 2003, 08:04 AM
Originally posted by Rellik not silencio who said it before outcoded who didn't know he had to mention Pythagerous

your graphic calls for a login.

.... Whenever you open the page ... I was wondering why a little box had popped up on my second monitor ... & it does it again when you write a reply with it in :D :D
Rellik
April 9th, 2003, 10:48 AM
fixed. I forgot to give public access
:sad:
ephmynus
April 9th, 2003, 11:06 AM
Originally posted by NooNoo
So, who's method did you choose A+ ?? :D :D

Umm....err..... I decided not to use the circle all together
/me ducks
Cleetus
April 9th, 2003, 11:15 AM
Sounds like you chose my option then!!!!!;)