Question 165165
Find the perimeter of the first field 
{{{P=2(l)ength+2(w)idth}}}
{{{P=2(300yds)+2(600yds)}}}
{{{P=600yds+1200yds}}}
{{{P=1800yds}}}
.
and then divide the total cost by the perimeter to find the cost/yard of construction.
{{{$4000/1800yds=$20/9yds}}} 
.
Next find the perimeter of the second field 
{{{P=2(200yds)+2(600yds)}}}
{{{P=400yds+1200yds}}}
{{{P=1600yds}}}
Plug the perimeter into the formula cost=perimeter*(cost/yard).
{{{cost=(1600yds)*($20)/(9yds)}}}
.
cost=$3555.56
.