Answer:
31 cm
Explanation:
A rectangle has 4 sides.
27 cm + 4 cm = 31 cm.
The perimeter is 31 cm.
If you are confused, to find perimeter you add all the sides up. That is why I added 1 + 1 + 1 + 1 / 4.
For inches or a different measure I recommend just converting it. You never mentioned the measure so I decided with cm.