To solve for the area of the circle, we use the formula:

$\text{Area} = \pi r^2$

Where:

• $\pi$ is approximately 3.14 (or you can use the calculator button for a more precise value),
• $r$ is the radius of the circle, which in this case is 15 kilometers.

Let me calculate the area for you using $\pi = 3.14$ first.

$\text{Area} = 3.14 \times (15)^2$

I'll compute that next.The area of the circle is approximately 706.5 square kilometers when using $\pi = 3.14$.

Would you like more details or have any questions about this solution?

Here are five related questions you might find interesting:

1. What happens to the area if the radius doubles?
2. How would you calculate the circumference of the circle with the same radius?
3. How does using a more precise value for $\pi$ (like 3.14159) affect the area calculation?
4. What is the relationship between the radius and the area of a circle?
5. How do you convert square kilometers to square meters?

Tip: When calculating circle areas or other geometric properties, always double-check the units to ensure consistency.