The length of a rectangular garden is 6 feet longer than its width. The garden's perimeter is 180 feet. Find the length of the garden.

Perimeter is all sides added up together. So as you don't know a side's length you can put it as x and make an equation.

x + x + x + 6 + x + 6 = 180

4x + 12 = 180

4x = 180 - 12

4x = 168

x = 168/4

x = 42

as length is 6 feet longer than width length is equal to 42 + 6 = 48 feet