#include<iostream>
#include<cmath>

using namespace std;

int main()
{
    double A, B, C;
    cin >> A >> B >> C;
    printf("TRIANGULO: %.3lf\n", A*C/2.0);
    printf("CIRCULO: %.3lf\n", pow(C, 2)*3.14159);
    printf("TRAPEZIO: %.3lf\n", (A + B) * C/2.0);
    printf("QUADRADO: %.3lf\n", pow(B, 2));
    printf("RETANGULO: %.3lf\n", A * B);
    return 0;
}