The result of your conversion between cuerda and yard appears here
To convert between Cuerda and Yard you have to do the following:
First divide 3930 / ((0.003785411784/231)*1728)*27 = 5140.24593391
Then multiply the amount of Cuerda you want to convert to Yard, use the chart below to guide you.
Symbol: cda
No description
Symbol: yd
No description