The sum of the length and width of a rectangular section is 1800m, and the length is 5 times greater than the width.

1. Suppose that the width of a given rectangular area is x meters.

2. According to the condition of the problem, its width is 5 times greater than its width, therefore, it has a length equal to (5 * x) = 5x meters.

3. And now we write down the equation, having solved which we will find out what the width of the section is equal to, if we are given that the sum of the length and width of this section is 1800 meters.

x + 5x = 1800;

6x = 1800;

x = 1800/6;

x = 300 meters.

4. Find the length.

300 * 5 = 1500 meters.

Answer: The width of the site is 300 meters, the length is 1500 meters.