Varignon平行四边形的周长和面积

给定a和b是四边形ABCD对角线AC和BD的长度，四边形的面积为s 。任务是找到Varignon平行四边形PQRS的周长和面积。
注：当我们加入任何四边形的边的中点，新的四边形内部形成有将永远是一个平行四边形，这paralleogram称为Varignon的paralleogram在法国数学家皮埃尔·伐里农命名。因此，PQRS将是一个平行四边形，因为它是通过连接四边形ABCD的中点而形成的，如下所示：

例子：

Input: a = 7, b = 8, s = 10 
Output: Perimeter = 15, Area = 5 
 

方法： Varignon平行四边形PQRS的周长等于四边形ABCD对角线长度的总和。
因此，周长= a + b ，其中a和b是对角线AC和BD的长度。
同样，Varignon平行四边形的面积始终是四边形ABCD面积的一半。
因此， Area = s / 2 ，其中s是四边形ABCD的面积。
下面是上述方法的实现：

C

// C program to find the perimeter and area
#include 
 
// Function to find the perimeter
float per( float a, float b )
{
    return ( a + b );
}
 
// Function to find the area
float area( float s )
{
    return ( s/2 );
}
 
// Driver code
int main()
{
    float a = 7, b = 8, s = 10;
    printf("%f\n",
           per( a, b ));
    printf("%f",
           area( s ));
    return 0;
}

Java

// Java code to find the perimeter and area
import java.lang.*;
 
class GFG {
 
    // Function to find the perimeter
    public static double per(double a, double b)
    {
        return (a + b);
    }
    // Function to find the area
    public static double area(double s)
    {
        return (s / 2);
    }
 
    // Driver code
    public static void main(String[] args)
    {
        double a = 7, b = 8, s = 10;
        System.out.println(per(a, b));
        System.out.println(area(s));
    }
}

Python3

# Python3 code to find the perimeter and area
     
# Function to find the perimeter
def per( a, b ):
    return ( a + b )
# Function to find the area
def area( s ):
    return ( s / 2 )
     
# Driver code
a = 7
b = 8
s = 10
print( per( a, b ))
print( area( s ))

C#

// C# code to find the perimeter and area
using System;
 
class GFG {
 
    // Function to find the perimeter
    public static double per(double a, double b)
    {
        return (a + b);
    }
    // Function to find the area
    public static double area(double s)
    {
        return (s / 2);
    }
 
    // Driver code
    public static void Main()
    {
        double a = 7.0, b = 8.0, s = 10.0;
        Console.WriteLine(per(a, b));
        Console.Write(area(s));
    }
}

Javascript

// javascript code to find the perimeter and area
 
// Function to find the perimeter
function per(a , b)
{
    return (a + b);
}
 
// Function to find the area
function area(s)
{
    return (s / 2);
}
 
// Driver code
var a = 7, b = 8, s = 10;
document.write(per(a, b));
document.write(area(s));
 
// This code is contributed by shikhasingrajput

输出：

15
5