三棱柱体

public class Triangle{
double s;
public Triangle(double a,double b){
        this.s=0.5*a*b;
        System.out.println("fuleis;"+s);
    }
    public double gets(){
    return s;
    }
}


class Test{
    public static void main(String args[]){
        sanjiaozhuiti ttt=new sanjiaozhuiti(5.0,8.0,5.0);
        ttt.vt();
        ttt.getv();
    }
}

class sanlenzhuti extends Triangle{
    double h;
    double v;
    sanlenzhuti(double a,double b,double h){
    super(a,b);
    this.h=h;
    }
    void vt(){
    this.v=gets()*h;
        System.out.println("v:"+v);
    }
    public void getv(){
        System.out.println("sanlenzhuiti:"+0.33*v);
    }
}

public class sanjiaozhuiti extends sanlenzhuti{
    sanjiaozhuiti(double a,double b,double h){
        super(a,b,h);
    }
    
}