Answer:

Explanation:
In order to find the area Zara uses to feed her horse, we'll first calculate the total area of her rectangular field and then determine the portion she uses for feeding her horse.
Given:
- Length of the field = 22 m
- Width of the field = 20 m
We have:

Substituting value:


Now, Zara uses 25% of the area to feed her chickens.
In order to find the area used to feed her horse, we need to subtract this amount from the total area.




Therefore,


