#include "pch.h"
#include <iostream>

using namespace std;
struct circle
{
	float radius;
};
struct rectangle
{
	float length, width;
};
struct square
{
	float length;
};
#include <iomanip>

double areacircle(float radius);
double arearectangle(float length,float width );
double areasquare(float slength);
void  perirec(float &length, float &width);
double  cost1(float &peri, float uni);
int main()
{
	float length=0, width=0;
	struct circle c;
	struct rectangle r1, r2;
	struct square s1;
	float  uni, cost;

	c.radius = 5;
	r1.length = 7;
	r1.width = 3;
	s1.length = 4;
	r2.length = 28;
	r2.width = 15;
	double yard = r2.length * r2.width;
	double cir=areacircle(c.radius);
	double  rec=arearectangle(r1.length, r1.width);
	double sq=areasquare(s1.length);
	double  garea = yard - (cir + rec + sq);
	cout << "The  green color area is "  << setiosflags(ios::fixed)
		<< setprecision(2)<< garea;
	perirec( length,  width);
	float peri = (length * 2) + (width * 2);
	cout << "Enter the cost per unit ";
	cin >> uni;
	cost = cost1(peri, uni);
	cout <<"THe total cost for the fence is "<< setiosflags(ios::fixed)
		<< setprecision(2) << cost;
}

double areacircle(float radius)
{
	return 22 / 7 * radius*radius;
}
double arearectangle(float length, float width)
{
	return length * width;
}
double areasquare(float slength)
{
	return slength * slength;
}
void  perirec(float &length, float &width)
{
	cout << "Enter the length ";
	cin >> length;
	cout << "Enter the width ";
	cin >> width;
}
double  cost1(float &peri, float uni)
{

	return uni * peri;

}