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0.5 acres = 21,780 square feet.So you know that (length) times (width) must be 21,780 but there are noother constraints on what the dimensions must be. There are an infinite numberof possible length/width combinations.
perimeter = length + length + width + width = 2*length + 2*width = 36 length = 5*width 2*(5*width) + 2*width = 36 12*width = 36 width = 3 length = 15
If the land area of 5 acres is a square (each side equal length) then the perimeter would be 1,866.76 feet.
A rod....5 1/2 feet
OK so we have two formulas: Length = width + 5 (since legth is 5 more than width) length + width + length + width = perimeter= 82 (form. for perm.) so we can replace every instance of "length" with "width + 5" since they are the same. width + 5 + width + width + 5 + width = 82 4xwidth + 10 = 82 4X width = 72 width = 23 so now go back and replace "width" with 23. length = 23 + 5 length = 28 There you go.