Answer :

Area = width x length.

[tex]360\quad =\quad \frac { 5 }{ 8 } \cdot l\\ \\ l=\frac { 8 }{ 5 } \cdot 360\quad =\quad \frac { 360\cdot 8 }{ 5 } =\frac { 360 }{ 5 } \cdot \frac { 8 }{ 1 } =72\cdot 8=576\\ \\ length\quad =\quad \boxed { 576 } [/tex]