Question 335351
The area of a rectangle is,
{{{L*W=350}}}
.
.
.
{{{W=14L}}}
Substitute into the area equation,
{{{L*14L=350}}}
{{{14L^2=350}}}
{{{L^2=25}}}
{{{L=5}}}ft
Then from above,
{{{W=14(5)}}}
{{{W=70}}}ft