The length of the rectangle is 5 3/8 dm, and the width is shorter than the length by 1.8 dm.

The length of the rectangle is 5 3/8 dm, and the width is shorter than the length by 1.8 dm. Find the perimeter of this rectangle.

To find the width, subtract 1.8 dm from the length:

(5 and 3/8) – 1.8 = 43/8 – 18/10.

Reducing to a common denominator:

430/80 – 144/80 = 286/80 = 3 and 46/80 = 3 and 23/40 dm.

We translate into decimal:

3 and 23/40 = 3.575 (dm) – width.

1) To find the perimeter, you can simply add all sides:

5.375 + 3.575 + 5.375 + 3.575 = 17.9 (dm).

2) You can also add length and width and multiply by two:

(5.375 + 3.575) * 2 = 17.9 (dm).

Answer: 17.9 dm.