Geometry Question

[ephmynus]

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]

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]

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]

Take your silly math questions and go to hell, you die, we do not lik you and your doggy anymore!!!!

[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.

[WebHead]

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]

here's a little graphic that may explain it visually

[silencio]

Originally posted by Rellik
here's a little graphic that may explain it visually

your graphic calls for a login.

[silencio]

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]

Kinda.

[NooNoo]

A+ have ya figured it out yet, or do you need more methodology??

[ephmynus]

Originally posted by NooNoo
A+ have ya figured it out yet, or do you need more methodology??

Oh, you guys are still talkin about this?

No, I'm cool

[NooNoo]

So, who's method did you choose A+ ??

[confus-ed]

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

[Rellik]

fixed. I forgot to give public access