The length of the rectangular reservoir is 45 m, and the width is 38 m.

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

We need to find the length of the hedge around the reservoir. It has the shape of a rectangle, so we must use the formula for finding the perimeter of a rectangle. It looks like this:

P = a + a + b + b, where P is the perimeter; a – the length of the rectangle; b is the width of the rectangle.

We need to add 2 meters to the length and width of the reservoir, since the fence is located at a distance of two meters from the reservoir. Now we can plug the values into the formula and find the length of the fence.

P = 47 + 47 + 40 + 40 = 84 + 80 = 164 (m)

Answer: 164 meters.