• Source
    1. #include<stdio.h>
    2. #include<math.h>
    3. #define PI acos(-1)
    4. int main()
    5. {
    6. long long int a,b,c;
    7. double R,r,s,d,e,f,g,h,i;
    8. while(scanf("%lld%lld%lld",&a,&b,&c)!=EOF)
    9. {
    10. s=(a+b+c)/2.0;
    11. r=sqrt(s*(s-a)*(s-b)*(s-c))/s;
    12. e=PI*r*r;
    13. f=sqrt(s*(s-a)*(s-b)*(s-c));
    14. R=(a*b*c)/(4*f);
    15. g=PI*R*R;
    16. h=g-f;
    17. i=f-e;
    18. printf("%.4lf %.4lf %.4lf\n",h,i,e);
    19. }
    20. return 0;
    21. }