The width of the rectangular section is 80 m less than its length. Find the area of the site

The width of the rectangular section is 80 m less than its length. Find the area of the site if the length of the fence around it is 800 m.

1) Let’s find out what width the site has, if we know that its length is 80 meters longer, and the perimeter is 800 meters. We draw up an equation where:

X is the width of the section;

X + 80 – length;

800 – perimeter.

(X + X + 80) * 2 = 800;

2X + 2X + 160 = 800;

4X = 800 – 160;

4X = 640;

X = 640/4;

X = 160 meters.

2) Find out how long this section has if it is 80 meters more than its width.

160 + 80 = 240 meters.

3) Find out what area of the site.

160 * 240 = 38400 m².

Answer: the area of the site was 38400 m².