One rectangular section is 36 meters long and 20 meters wide

One rectangular section is 36 meters long and 20 meters wide. Find the width of another section with the same area, if its length is 6 meters less than the first section.

First, we will find the area of the first section.
S = a * b, where a is the length of the section, b is the width of the section. We get:
S = 36 * 20 = 720 (m²).
According to the condition of the problem, the area of the second section is equal to the area of the first, and the length is a = 36 – 6 = 30 (m).
Knowing the area and length, we calculate the width of the site:
720 = 30 * b,
b = 720: 30,
b = 24 (m).
Answer: 24 meters.