Susan has a rectangular garden that measures 20 feet by 10 feet. what is the least amount of fencing that she needs to buy in order to enclose the garden?

To find the amount of feet of fencing she will need, you will calculate the perimeter of the rectangle or space.

To find the perimeter you add the links of all sides.

20 feet + 10 feet + 20 feet + 10 feet = 60 feet

Susan will need a minimum of 60 feet of fencing.