To solve this, let's calculate the circumference and area of the circle based on the given formulas.

Given Data:

• Diameter ($d$) = 1.8 m
• Radius ($r$) = $\frac{d}{2} = \frac{1.8}{2} = 0.9 \, \text{m}$
• Use $\pi = 3.14$

Step 1: Calculate the circumference

The formula is: $C = \pi d$ Substituting the values: $C = 3.14 \times 1.8 = 5.652 \, \text{m}$ To two decimal places: $C = 5.65 \, \text{m}$

Step 2: Calculate the area

The formula is: $A = \pi r^2$ Substituting the values: $A = 3.14 \times (0.9)^2 = 3.14 \times 0.81 = 2.5434 \, \text{m}^2$ To two decimal places: $A = 2.54 \, \text{m}^2$

Final Answers:

1. Circumference: $5.65 \, \text{m}$
2. Area: $2.54 \, \text{m}^2$

Would you like a detailed explanation of these steps or help with a related problem?

Here are 5 questions to deepen your understanding:

1. What would the circumference be if the diameter were doubled?
2. How does the radius affect the area of a circle?
3. If $\pi$ were approximated as 3.1416, how would the results change?
4. What is the relationship between the diameter and the radius of a circle?
5. Can you derive the formula for the area of a circle using calculus?

Tip: Always ensure that units match in your calculations to avoid errors!