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### 1857 - The Knights Of The Round Table

Posted: Sat Jun 02, 2012 2:51 pm

### Re: 1857 - The Knights Of The Round Table

Posted: Mon Jul 09, 2012 8:35 am
Hi!... Is r= A/p ( p= (a+b+c)/2 and A= Sqrt(p*(p-a)*(p-b)*(p-c)) ) the solution in this problem? [Because I looking for the radius of the inscribed circumference] Then I must round to 3 decimal digits. ???

### Re: 1857 - The Knights Of The Round Table

Posted: Thu Jul 19, 2012 6:53 pm
Your problem is that this is the ecuation for the cicunscribed circunference.

### Re: 1857 - The Knights Of The Round Table

Posted: Fri Jul 20, 2012 8:28 am
Phantom wrote:Your problem is that this is the ecuation for the cicunscribed circunference.
Sorry but that is the equation of the radius of the inscribed circumference , the formula of the radius of the circumscribed circumference is R=(abc)/(4A) . I already found my error and it was not in the formula, but rather I should check that the data were positive and the triangular inequality (things that the problem didn't specify , but...)
Anyway, thank you to go in my help. I already get an Accepted

### Re: 1857 - The Knights Of The Round Table

Posted: Sat Jul 28, 2012 4:24 pm
Yes, you are rigth. Sorry for that. But... I get an accepted too, and I haven't check anithing...

### Re: 1857 - The Knights Of The Round Table

Posted: Sun Jul 29, 2012 9:17 pm
Phantom wrote:Yes, you are rigth. Sorry for that...
No problem!!
Phantom wrote: I get an accepted too, and I haven't check anithing...
????