Answer:
[tex]25\pi\text{ or 79 square kilometers}[/tex]
Explanation:
The below formula can be used to determine the area of a circle;
[tex]A=\pi\times r^2[/tex]
where pi = 3.14
r = radius of the circle = 5km
Let's go ahead and substitute the given into our formula and solve for A;
[tex]A=\pi(5)^2=25\pi=78.5\approx79\text{ square km}[/tex]
