Answer:
the new perimeter of the land is 40m
Explanation:
The computation of the new perimeter of the land is given below:
Since the square plot is 81m^2
It could be increased by 19m^2
So the total would be
= 81m^2 + 19m^2
= 100m^2
Each side is 10m
Now the perimeter is sum of all sides
= 10m + 10m + 10m + 10m
= 40m
hence, the new perimeter of the land is 40m