#include <stdio.h> #include <math.h> int main() { int a, b, c; double h, s; scanf("%d %d %d", &a, &b, &c); h = (a + b + c) / 2.0; s = sqrt(h * (h - a) * (h - b) * (h - c)); printf("circumference=%d.00 area=%.2f ", a + b + c, s); ...