Circumradius of a Cyclic Quadrilateral using the length of Sides

// Java program to find circumradius of 
// a cyclic quadrilateral using sides 
import java.util.*; 

class GFG{ 

// Function to return the circumradius 
// of a cyclic quadrilateral using sides 
static double Circumradius(int a, int b, 
						int c, int d) 
{ 
	
	// Find semiperimeter 
	double s = (a + b + c + d) / 2.0; 

	// Calculate the radius 
	double radius = Math.sqrt(((a * b) + (c * d)) * 
							((a * c) + (b * d)) * 
							((a * d) + (b * c)) / 
							((s - a) * (s - b) * 
							(s - c) * (s - d))); 

	return radius / 4; 
} 

// Driver Code 
public static void main(String[] args) 
{ 
	int A = 3; 
	int B = 4; 
	int C = 5; 
	int D = 6; 

	// Function call 
	double ans = Circumradius(A, B, C, D); 

	// Print the radius 
	System.out.format("%.2f", ans); 
} 
} 

// This code is contributed by 29AjayKumar