#include <cstdio>
using namespace std;
int main()
{
    double A,B,C;
    scanf("%lf%lf%lf",&A,&B,&C);
    printf("TRIANGULO: %.3lf\n",0.5*A*C);
    printf("CIRCULO: %.3lf\n",3.14159*C*C);
    printf("TRAPEZIO: %.3lf\n",0.5*(A+B)*C);
    printf("QUADRADO: %.3lf\n ",B*B);
    printf("RETANGULO: %.3lf\n",A*B);

    return 0;
}