The perimeter of the rectangular garden is 250 meters and the width is 39 meters. Calculate the length of the garden.

Initially, remember that the perimeter of a rectangular shape is the sum of all its sides.
Further, we think as follows: if the width of the garden is 39 meters, then the two sides of the garden will be equal:
1) 39 meters * 2 sides = 78 meters – two sides of the garden width.
Next, we calculated how many meters the two sides of the garden take. To do this, subtract two sides of the width of the garden from the perimeter on:
2) 250 m – 78 m = 172 meters – two sides of the length of the garden.
Therefore, the length of the garden is:
3) 172 m / 2 sides = 86 m.