title: Point within and on circle
body: <p>I have solved this problem but im not sure if its correct..</p>
  
  <p>User should give the coordinates of a point and I should check if that point is within,outside or on the circle. I used the distance formula to solve this .
  The given information about the circle are:</p>
  
  <p><strong>Circle is centered at ( 0,0 )
  and  radius is 10</strong></p>
  
  <pre><code> public static void main(String[] strings) {
  
  
      Scanner scanner = new Scanner(System.in);
  
      System.out.println("Enter a point with two coordinates");
      double y1 = scanner.nextDouble();
      double x1 = scanner.nextDouble();
  
      //  circle is centered at 0,0
      double y2 = 0;
      double x2 = 0;
  
      double radius = 10;
  
      double distance;
      // using the distance formula to calculate the distance
      // from the point given from the user and point where circle is centered
  
      /**
       * distance formula
       *  d = √ ( x2 - x1 )^2 + (y2 - y1 )^2
       */
  
      distance = Math.pow( x2 - x1,2) + Math.pow(y2-y1,2);
  
      // find square root
      distance = Math.sqrt(distance);
  
      String result="";
  
      if(distance &lt; radius) {
          result = "("+y1+" , "+x1+")" +" is within the circle";
      }
      else if(distance &gt; radius) {
          result = y1+" , "+x1 +" is outside the circle";
      }
      else if(distance == radius) {
          result =y1+" , "+x1 +" is on the circle";
      }
  
      System.out.println(result);
  
  }
  </code></pre>