Re: Help with formula please

The side of a square with diagonal d (here d = 700) is $\displaystyle \frac{d\sqrt{2}}{2}$.

Re: Help with formula please

Hi infoweb,

If you mean that A+B+C = 700mm there is no unique solution.There is no formula but you can calculate d by assuming A =a fraction of A and C another fraction of d.Express the total of the three sides in terms of d.Equate to 700mm

Re: Help with formula please

Hi there,

Thanks for the quick responses. It's been over 20 years since I've done any math like this so I'm totally out of touch!

@Bjhopper

Sorry, I didn't make my self clear enough:

A= 700

B= 700

C= 700

I now need to work out the length of E and D which should be equal to each other.

I tried the formula that emakarov provided but the answer I got didn't seem correct (494.97) not sure if that relates to the length of E and D as it seems too short.

Mark.

Re: Help with formula please

Quote:

Originally Posted by

**infoweb** I tried the formula that emakarov provided but the answer I got didn't seem correct (494.97) not sure if that relates to the length of E and D as it seems too short.

$\displaystyle B\sqrt{2}/2$ gives you the side of the square whose diagonal is B. Thus, $\displaystyle D=A+B\sqrt{2}/2$.

Edit: This ignores the thickness of the segments.