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

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

To solve this problem, we introduce the conditional variable “X”, through which we denote the length of the fence, set at a distance of 2 meters from the reservoir.

Since the fence is installed at a distance of 2 meters, it means that its length and width will be increased by 4 meters.

Then, based on the data of the problem, we will compose the following equation: X = 2 (45 + 4 + 38 + 4).

Solving this equation, we get X equal to 182 meters.

Answer: 182 meters.