Question 356759
{{{drawing(300,300,-10,10,-10,10,blue(line(-4,6,4,6)),blue(line(-4,6.2,4,6.2)),line(4,6,4,-6),line(4,-6,-4,-6),line(-4,-6,-4,6),locate(-1.5,7.5,RIVER),locate(0,-7,X),locate(-6,0,2X),circle(-4,6,0.3),circle(4,6,0.3),circle(4,-6,0.3),circle(-4,-6,0.3))}}}
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The perimter of the fencing is,
{{{P=2X+2X+X=800}}}
{{{5X=800}}}
{{{X=160}}}
{{{2X=320}}}
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The dimensions are 160 yds wide x 320 yds deep.