Question 1108569
a.)   L = 3W  
    and 
       Area = LW = {{{3W^2}}} = 675 sq ft
—
b)  {{{ 3W^2 = 675 }}}  
To solve for W, first divide both sides by 3:
     {{{ W^2 = 225 }}}
Take the square root of both sides
    {{{ W = 15ft }}}  —>  {{{ L = 45ft }}}
 
—
Check:
    A = 15*45 = 675 (ok)