To calculate the area of the circle given its radius, we use the formula:

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

Given:

• $r = 7.3 \, \text{cm}$

Steps:

1. Square the radius: $r^2 = 7.3^2 = 53.29$

2. Multiply by $\pi$ (using $\pi \approx 3.14159$): $\text{Area} = \pi \times 53.29 \approx 167.55 \, \text{cm}^2$

3. Round the result to 1 decimal place: $\text{Area} \approx 167.6 \, \text{cm}^2$

Final Answer:

$\text{Area} = 167.6 \, \text{cm}^2$

Would you like me to explain any step further or perform additional calculations?

Here are 5 related questions for further exploration:

1. What is the circumference of this circle?
2. How does the area change if the radius is doubled?
3. How would you calculate the area if given the diameter instead of the radius?
4. Why do we use $\pi$ in the formula for the area of a circle?
5. How does rounding affect the accuracy of the final result?

Tip: Always double-check the units when working with areas to ensure consistency in your calculations!