可以刻在矩形中的最大可能菱形的区域

给定一个长度为l且宽度为b的矩形，任务是找到可以刻在矩形中的最大菱形。
例子：

Input : l = 5, b = 4
Output : 10

Input : l = 16, b = 6
Output : 48

从图中可以看出，可以内接在矩形内的最大菱形将具有与矩形的长度和宽度相等的对角线。
因此，菱形面积A =(l * b)/ 2
下面是上述方法的实现：

C++

// C++ Program to find the biggest rhombus
// which can be inscribed within the rectangle
#include 
using namespace std;
 
// Function to find the area
// of the biggest rhombus
float rhombusarea(float l, float b)
{
    // the length and breadth cannot be negative
    if (l < 0 || b < 0)
        return -1;
 
    // area of the rhombus
    return (l * b) / 2;
}
 
// Driver code
int main()
{
    float l = 16, b = 6;
    cout << rhombusarea(l, b) << endl;
    return 0;
}

Java

// Java Program to find the
// biggest rhombus which can be
// inscribed within the rectangle
import java.io.*;
 
class GFG
{
 
// Function to find the area
// of the biggest rhombus
static float rhombusarea(float l,
                         float b)
{
    // the length and breadth
    // cannot be negative
    if (l < 0 || b < 0)
        return -1;
 
    // area of the rhombus
    return (l * b) / 2;
}
 
// Driver code
public static void main (String[] args)
{
    float l = 16, b = 6;
    System.out.println(rhombusarea(l, b));
}
}
 
// This code is contributed
// by inder_verma

Python3

# Python 3 Program to find the biggest rhombus
# which can be inscribed within the rectangle
 
 
# Function to find the area
# of the biggest rhombus
def rhombusarea(l,b):
    # the length and breadth cannot be negative
    if (l < 0 or b < 0):
        return -1
 
    # area of the rhombus
    return (l * b) / 2
 
# Driver code
if __name__ == '__main__':
    l = 16
    b = 6
    print(rhombusarea(l, b))

C#

// C# Program to find the
// biggest rhombus which can be
// inscribed within the rectangle
using System;
 
class GFG
{
 
// Function to find the area
// of the biggest rhombus
static float rhombusarea(float l,
                        float b)
{
    // the length and breadth
    // cannot be negative
    if (l < 0 || b < 0)
        return -1;
 
    // area of the rhombus
    return (l * b) / 2;
}
 
// Driver code
public static void Main ()
{
    float l = 16, b = 6;
    Console.WriteLine(rhombusarea(l, b));
}
}
 
// This code is contributed
// by shs

---

Javascript

 
// javascript Program to find the
// biggest rhombus which can be
// inscribed within the rectangle
 
// Function to find the area
// of the biggest rhombus
function rhombusarea(l,b)
{
    // the length and breadth
    // cannot be negative
    if (l < 0 || b < 0)
        return -1;
 
    // area of the rhombus
    return (l * b) / 2;
}
 
// Driver code
var l = 16, b = 6;
document.write(rhombusarea(l, b));
 
// This code contributed by Princi Singh
 

输出：

48