Given two positive integers i.e, the length and breadth of the rectangle, the task is to find the length of the Diagonal of a Rectangle.

Example:
Input: length=4 breadth=3
output: The Diagonal is 5
The diagonal of a rectangle is sqrt (a*a+ b*b)
// C++ Program to Find Diagonal of a Rectangle
#include <bits/stdc++.h>
using namespace std;
// Function to find the length of the
// diagonal of a rectangle of given sides
double findDiagonal(double a, double b)
{
return sqrt(a * a + b * b);
}
// Driver Code
int main()
{
double a = 4, b = 3; // a is the length and b is the
// breadth of the rectangle
cout << "The Diagonal is " << findDiagonal(a, b);
return 0;
}
Output
The Diagonal is 5
Time Complexity: O(1)
Auxiliary Space: O(1)