#include <stdio.h> #include <math.h> int main() { int a,b,c; scanf("%d %d %d",&a,&b,&c); float p=(a+b+c)/2.0; float circumference=a+b+c,area=sqrt(p*(p-a)*(p-b)*(p-c)); printf("circumference=%.2f area=%.2f",circumference,area); return 0; }