Question 507001
{{{A=LW}}} Start with the area of a rectangle formula.



{{{A/L=W}}} Divide both sides by {{{L}}} to isolate "W".



{{{W=A/L}}} Flip the equation.



{{{W=(40)/(12)}}} Plug in {{{A=40}}} and {{{L=12}}}.



{{{W=3.33333333333333}}} Divide {{{40}}} into {{{12}}} to get {{{3.33333333333333}}}.



So if a rectangle has a length of {{{12}}} yards and an area of {{{40}}} square yards, then it must have a width of roughly {{{3.33333333333333}}} yards.