UVA 11152 - Colourful Flowers Solution

Problem link-click here

it's an easy geometrical problem. there's some formula's to cope with this problem. see the codes to get better.

#include<bits/stdc++.h>
#define pi acos(-1)
using namespace std;

int main()
{
    double a,b,c;

    while(cin>>a>>b>>c)
    {
       double s = (a+b+c)/2;

       double p= abs( sqrt((s-a)*(s-b)*(s-c)/s) );

       double r= pi*p*p;

       double q= sqrt(s*(s-a)*(s-b)*(s-c));

       double t= abs(q-r);

       double r1= (a*b*c)/(4*q);

       double u= pi * r1 * r1;

       double v= u-q;

       cout<<fixed<<setprecision(4)<<v<<" "<<t<<" "<<r<<endl;
    }
    return 0;
}