The length of the cloth is 18 m.We're asked to determine the length of the cloth.Given values:[tex]\sf A=18 \ m^2[/tex][tex]\sf w = 1\ m[/tex]Apply the formula for the area of a rectangle:[tex]\sf A=LW[/tex]Substitute the given values:[tex]\sf 18=L*1[/tex]Divide both sides by 1.[tex]\sf 18=L[/tex]