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