You will use 220ft of fencing to fence a rectangular plot of land. the length is 20 more than the width. what are the dimensions of the rectangular plot? (withyour work? )

Set up the following equations:




110 represents the lengths of the length and width of the triangle, as you'll divide total perimeter of the rectangle, 220, by 2 to find the individual lengths. 20 is the difference between the length and width.

We'll use elimination for this system of equations, as there are opposite coefficients for W in both equations. Combine the two equations:



Divide both sides by 2 to get L by itself:



The length of the rectangle is 65 feet.

Plug this value into the second equation:



Add W to both sides:



Subtract 20 from both sides:



The width of the rectangle is 45 feet.