The total distance around the outside of a
Drag any orange dot to resize the rectangle. The perimeter is calculated as you drag.
How to find the perimeter of a rectangle
Like any polygon, the perimeter is the total distance around the outside,
which can be found by adding together the length of each side.
I the case of a rectangle, opposite sides are equal in length, so the
perimeter is twice its width plus twice its height. Or as a formula:
perimeter = 2(w+h)
where: w is the width of the rectangle h is the height of the rectangle