#include<iostream>
#include<cstdio>

using namespace std;

int main()
{
    double A,B,C;
    scanf("%lf%lf%lf",&A,&B,&C);
    printf("TRIANGULO: %.3lf\n",A*C/2);
    printf("CIRCULO: %.3lf\n",3.14159*C*C);
    printf("TRAPEZIO: %.3lf\n",(A+B)*C/2);
    printf("QUADRADO: %.3lf\n",B*B);
    printf("RETANGULO: %.3lf\n",A*B);

    return 0;
}