class Question7
{
    double volume(double R)
    {
        double V = (4.0/3)*(22.0/7)*(R*R*R);
        return V;
    }
    double volume(double H,double R)
    {
        double V = (22.0/7)*(R*R)*H;
        return V;
    }
    double volume(double L, double B ,double H)
    {
        double V = L*B*H;
        return V;
    }
}