#include<bits/stdc++.h>
using namespace std;
int main(){
    double a,b,c;
    cin>>a>>b>>c;
    printf("TRIANGULO: %.3lf\n",0.5*a*c);
    printf("CIRCULO: %.3lf\n",3.14159*c*c);
    printf("TRAPEZIO: %.3lf\n",(a+b)*c*0.5);
    printf("QUADRADO: %.3lf\n",b*b);
    printf("RETANGULO: %.3lf",a*b);
}