To solve this, let's use the formulas for the circumference and area of a circle.

Given:

• Radius $r = 7.3 \, \text{m}$

Part 1: Circumference

The formula for the circumference of a circle is: $C = 2 \pi r$ Substitute $r = 7.3$: $C = 2 \times \pi \times 7.3 \approx 45.9 \, \text{m}$

Part 2: Area

The formula for the area of a circle is: $A = \pi r^2$ Substitute $r = 7.3$: $A = \pi \times (7.3)^2 \approx 167.4 \, \text{m}^2$

Final Answers

1. Circumference: $\approx 45.9 \, \text{m}$
2. Area: $\approx 167.4 \, \text{m}^2$

Would you like more details, or have any questions?

Here are five related questions to extend understanding:

1. What would the area be if the radius was doubled?
2. How does changing the radius affect the circumference?
3. Can you derive the formulas for circumference and area from first principles?
4. How would the formulas change if this were a semicircle?
5. What is the area-to-circumference ratio, and what does it signify?

Tip: Always use $\pi \approx 3.1416$ or the $\pi$ button on a calculator for more accurate results.