What formula should be used to find the perimeter of a garden measuring 12 feet by 5 feet?

To determine the perimeter of a rectangle, you can use the formula for the perimeter, which is the sum of all sides. For a rectangular garden, the length and width are given, and the perimeter can be calculated by taking twice the length plus twice the width. In this case, the length is 12 feet, and the width is 5 feet. Thus, the formula used is P = 2(length) + 2(width).

Substituting the values into this formula gives P = 2(12) + 2(5). This correctly accounts for both lengths and both widths, leading to the accurate calculation of the total distance around the garden. Therefore, this choice effectively captures the full perimeter, confirming it as the correct answer.