#include<stdio.h> #include<math.h> int main(){ int a,b,c; scanf("%d %d %d",&a,&b,&c); float cir,area; cir=a+b+c; float p; p=cir/2; area=sqrt(p*(p-a)(p-b)(p-c)); printf("circumference=%.2f area=%.2f",cir,area); }