For example P 2 14 8 2 22 44 centimeter 173 in. This is the equivalent of adding all four sides since opposite sides are of equal length by definition. The formula for the perimeter of a rectangle is P length breadth length breadth.
In that case you would use the formula.
Sometimes base and height are used instead of length and width. Both lengths of the rectangle are the same and both widths are the same. You are able to find the perimeter of the rectangle by adding length and width and multiplying by two because the opposite sides of a rectangle are equal in length. The formula for the perimeter of a rectangle is P length breadth length breadth.