Question 1153697
Total area of sidewalk plus garden,  {{{(6+2w)(4+2w)}}};
Only the garde area, {{{6*4}}};
Only the area of sidwalk, {{{(6+2w)(4+2w)-6*4=56}}}.


Simplify and solve that last equation in whichever way you can or need.





{{{highlight(w=2)}}}