The length of the rectangular reservoir is 45 m and the width is 38 m, at a distance of 2 meters

The length of the rectangular reservoir is 45 m and the width is 38 m, at a distance of 2 meters from the reservoir, a fence was placed Find the length of the fence.

To solve this problem, we introduce a conditional variable “X”, through which we denote the length of the fence. Since the fence is installed at a distance of 2 meters from the reservoir, the length and width of the fence will be 4 meters longer than the length and width of the reservoir, namely 45 + 4 = 49 meters and 38 + 4 = 42 meters. Then, based on the data of the problem, we will compose the following equation: X = 2 (49 + 42). Solving this equation, we get X equal to 182 meters.
Answer: the length of the fence is 182 meters.