直角三角形的外接圆的面积

给定整数C ，该整数C是通过外接圆的中心的外接圆的直角三角形的斜边的长度。任务是找到外接圆的区域。

例子：

Input: C = 8 
Output: 50.26
Input: C = 10 
Output: 78.53 
 

方法：由于斜边C穿过圆的中心，所以圆的半径将为C / 2 。
而且我们知道，圆的面积为PI * r ² ，其中PI = 22/7且r为圆的半径。
因此，外接圆的面积将是PI *(C / ²⁾²即PI * C ^2/4。
下面是上述方法的实现：

C++

// C++ program to find the area of Cicumscribed
// circle of right angled triangle
#include 
#define PI 3.14159265
using namespace std;
 
// Function to find area of
// circumscribed circle
float area_circumscribed(float c)
{
    return (c * c * (PI / 4));
}
 
// Driver code
int main()
{
    float c = 8;
    cout << area_circumscribed(c);
    return 0;
}
 
// This code is contributed by Shivi_Aggarwal

C

// C program to find the area of Cicumscribed
// circle of right angled triangle
#include 
#define PI 3.14159265
 
// Function to find area of
// circumscribed circle
float area_circumscribed(float c)
{
    return (c * c * (PI / 4));
}
 
// Driver code
int main()
{
    float c = 8;
    printf("%f",
           area_circumscribed(c));
    return 0;
}

Java

// Java code to find the area of circumscribed
// circle of right angled triangle
import java.lang.*;
 
class GFG {
 
    static double PI = 3.14159265;
 
    // Function to find the area of
    // circumscribed circle
    public static double area_cicumscribed(double c)
    {
        return (c * c * (PI / 4));
    }
 
    // Driver code
    public static void main(String[] args)
    {
        double c = 8.0;
        System.out.println(area_cicumscribed(c));
    }
}

Python3

# Python3 code to find the area of circumscribed
# circle of right angled triangle
PI = 3.14159265
     
# Function to find the area of
# circumscribed circle
def area_cicumscribed(c):
    return (c * c * (PI / 4))
     
# Driver code
c = 8.0
print(area_cicumscribed(c))

C#

// C# code to find the area of
// circumscribed circle
// of right angled triangle
using System;
 
class GFG {
    static double PI = 3.14159265;
 
    // Function to find the area of
    // circumscribed circle
    public static double area_cicumscribed(double c)
    {
        return (c * c * (PI / 4));
    }
 
    // Driver code
    public static void Main()
    {
        double c = 8.0;
        Console.Write(area_cicumscribed(c));
    }
}

Javascript

// javascript code to find the area of circumscribed
// circle of right angled triangle
 
    let PI = 3.14159265;
 
    // Function to find the area of
    // circumscribed circle
    function area_cicumscribed(c) {
        return (c * c * (PI / 4));
    }
 
    // Driver code
    var c = 8.0;
    document.write(area_cicumscribed(c).toFixed(6));
 
// This code is contributed by Rajput-Ji

输出：

50.265484