Answer:
Let
the breadth =x
the length =6x
As we know that in a rectangle
[tex]{\boxed{\sf Area=lb}}[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x\times 6x=160 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf 6x^2=160[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x^2={\dfrac {160}{6}}[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x^2=26.6 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x=\sqrt {26.6}[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x=5.1yards[/tex]