Question

The radius of a circle is 3 kilometers. What is the circle's area?
r=3 km
Use ​𝜋 ≈ 3.14 and round your answer to the nearest hundredth.
square kilometers

Answer 1

The area \( A \) of a circle can be calculated using the formula:

\[
A = \pi r^2
\]

where \( r \) is the radius of the circle.

Given:
- Radius \( r = 3 \) kilometers
- \( \pi \approx 3.14 \)

Plugging in the values:

\[
A = 3.14 \times (3)^2
\]
\[
A = 3.14 \times 9
\]
\[
A = 28.26 \text{ square kilometers}
\]

Thus, the area of the circle is approximately **28.26** square kilometers.