#include<iostream>
#include<cstdio>

using namespace std;

int main(){
    double A,B,C;    //float有效数字只有6-7位，必须使用double
    cin >> A >> B >> C;

    printf("TRIANGULO: %.3f\n",A*C/2.0);
    printf("CIRCULO: %.3f\n",3.14159*C*C);
    printf("TRAPEZIO: %.3f\n",(A+B)*C/2);
    printf("QUADRADO: %.3f\n",B*B);
    printf("RETANGULO: %.3f\n",A*B);


    return 0;
}