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The question asks to calculate the area of a circle with a diameter of 9 meters, using \( \pi \approx 3.142 \), and round the answer to two decimal places.

### Formula for the area of a circle:
\[
A = \pi \times r^2
\]
Where:
- \( A \) is the area.
- \( r \) is the radius of the circle, which is half of the diameter.
- \( \pi \) is approximately 3.142 as given.

Given:
- Diameter \( d = 9 \, \text{m} \), so radius \( r = \frac{9}{2} = 4.5 \, \text{m} \).

Now, we will compute the area.The area of the circle is approximately \( 63.63 \, \text{m}^2 \), rounded to two decimal places.

Would you like more details, or do you have any questions?

Here are some related questions to explore:
1. How would the area change if the diameter were doubled?
2. What would be the circumference of this circle using the same value of \( \pi \)?
3. How do you calculate the area of a semicircle using this diameter?
4. What if \( \pi \) were taken as 3.14159 instead? How would the answer change?
5. How can we convert this area into square centimeters?

**Tip:** Always check if the radius or diameter is given in circle problems, as they are often confused.

Work out the area of this circle. Take π to be 3.142 and give your answer to 2 decimal places. The circle has a diameter of 9m.

Learn how to calculate the area of a circle with a 9m diameter using π ≈ 3.142. This solution provides step-by-step instructions, including how to apply the formula A = π × r^2. Suitable for students in Grades 6-8.

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