找出椭圆内刻的最大圆的面积

给定一个椭圆，长轴和短轴的长度分别为2a和2b。任务是找到可以刻在其中的最大圆的面积。
例子：

Input : a = 5, b = 3
Output : 28.2743

Input : a = 10, b = 8
Output : 201.062

方法：椭圆内切圆的最大半径是椭圆的短轴。
因此，最大圆的面积= π* b * b 。
下面是上述方法的实现：

C++

// CPP program to find
// the area of the circle
#include 
using namespace std;
#define pi 3.1415926
 
double areaCircle(double b)
{
    double area = pi * b * b;
    return area;
}
 
// Driver Code
int main()
{
    double a = 10, b = 8;
    cout << areaCircle(b);
    return 0;
}

Java

// Java Program to find the area
// of circle
 
class GFG
{
    static double areaCircle(double b)
    {
     
     
        // Area of the Reuleaux triangle
        double area = (double)3.1415926 * b * b;
        return area;
    }
     
    // Driver code
    public static void main(String args[])
    {
        float a = 10,b = 8;
        System.out.println(areaCircle(b)) ;
    }
}
 
// This code is contributed by mohit kumar 29

Python3

# Python3 program implementation of above approach
 
import math
 
# Function to return required answer
def areaCircle(b):
    area = math.pi * b * b
    return area
 
 
# Driver Code
a = 10
b = 8
print(areaCircle(b))
 
# This code is contributed by
# Sanjit_Prasad

C#

// C# Program to find the area
// of circle
using System;
 
class GFG
{
    static double areaCircle(double b)
    {
        // Area of the Reuleaux triangle
        double area = (double)3.1415926 * b * b;
        return area;
    }
     
    // Driver code
    public static void Main()
    {
        float b = 8;
        Console.WriteLine(areaCircle(b)) ;
    }
}
 
// This code is contributed by aishwarya.27

Javascript

// Javascript program to find
// the area of the circle
function areaCircle(b)
{
    let area = 3.1415926 * b * b;
    return area;
}
 
// Driver Code
    let a = 10, b = 8;
    document.write(areaCircle(b));
 
// This code is contributed by Mayank Tyagi

输出：

201.062