For the given triangle, hypotenuse side is x and length of legs of right triangle is,
[tex]\sqrt[]{10}\text{ yards}[/tex]Determine the value of x by using pythagoras theorem in right angle triangle.
[tex]\begin{gathered} x=\sqrt[]{(\sqrt[]{10})^2+\sqrt[]{10})^2} \\ =\sqrt[]{10+10} \\ =\sqrt[]{20} \\ =\sqrt[]{2\cdot2\cdot5} \\ =2\sqrt[]{5} \end{gathered}[/tex]Answer: Option C (2√5 yd)