Answer:
A. 8.6 km
B. 34.4 km
Explanation:
All the sides of a square have the same value. So because one side is 8.6 km, we know that all the other sides are also 8.6 km.
We get the perimeter by adding up all the sides of a polygon together. Since all the sides are 8.6 km, we can multiply 8.6 by 4. The perimeter is 34.4 km.