The length of the rectangle is 1 4/20 m, and the width is 3/20 m less than the length, find the perimeter of the rectangle.

1. From the problem statement, we know that the length of the given rectangle is equal to 1 4/20 meters.
2. Let’s calculate what the width of this rectangle is, if we also know that it is 3/20 meters less than its length, we get:
1 4/20 – 3/20 = 24/20 – 3/20 = 21/20 meters.
3. Next, we calculate what the perimeter of this rectangle is, for which we need to add the lengths of all its four sides, we get:
P = 1 4/20 + 1 4/20 + 21/20 + 21/20 = 2 50/20 = 4 10/20 = 4.5 meters.
4. Now let’s express the perimeter of the rectangle in cm.
4.5 m = 4.5 * 100 cm = 450 cm.