#include<iostream.h>
class distante {
private:
double x,y,z,w;
public:
peremeter(){x=0;y=0;z=0;w=0;}
peremeter(double a,double b, double c, double d)
{x=a; y=b; z=c; w=d;}
double peremeter(double x)
{
return (2*3.14*x);}
double peremeter(double x,double y)
{
return 2*(x+y);}
double peremeter(double x,double y,double z)
{
return (x+y+z);
}
/*double peremeter(double x,double y,double z,double w)
{
return (x+y+z+w);}*/
}
circl1,
rect1,
tri1,
trap1;
int main()
{
double p,q,m,n;
cout<<"enter four number"<<endl;
cin>>p>>q>>m>>n;
distante circl2;
cout<<circl1.peremeter(p)<<endl;
cout<<circl2.peremeter(p)<<endl;
distante rect2;
cout<<rect1.peremeter(p,q)<<endl;
cout<<rect2.peremeter(p,q)<<endl;
distante tri2;
cout<<tri1.peremeter(p,q,m)<<endl;
cout<<tri2.peremeter(p,q,m)<<endl;
distante trap2;
cout<<trap1.peremeter(p,q,m)<<endl;
cout<<trap2.peremeter(p,q,m)<<endl;
return 0;
}