Question 391535
  <pre><font size = 3 color = "indigo"><b>
Hi,         
        
Let x AND 3x represent the width and length respecively
Applying the Pythagorean theorem
 x^2 + (3x)^2 = 50cm  
 x^2 + 9x^2 = 50
  10x^2 = 50
    x^2  = 5
   {{{ x = sqrt(5)}}}, the width of the rectangle