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Let's solve the questions from the image.

**Circle Practice Set 1**

1. What is the area of a circle with a diameter of 13 yards?
   - Use the formula: \( \text{Area} = \pi r^2 \), where \( r = \frac{d}{2} \).
   - \( r = \frac{13}{2} = 6.5 \) yards.
   - \( \text{Area} = \pi \times (6.5)^2 \approx 132.73 \) square yards.

2. What is the circumference of a circle with a radius of 1.2 cm?
   - Use the formula: \( \text{Circumference} = 2 \pi r \).
   - \( \text{Circumference} = 2 \pi \times 1.2 \approx 7.54 \) cm.

3. What is the area of a circle with a radius of 5.3 cm?
   - Use the formula: \( \text{Area} = \pi r^2 \).
   - \( \text{Area} = \pi \times (5.3)^2 \approx 88.25 \) square cm.

4. What is the area of a circle with a radius of 9.8 cm?
   - Use the formula: \( \text{Area} = \pi r^2 \).
   - \( \text{Area} = \pi \times (9.8)^2 \approx 301.71 \) square cm.

5. What is the radius of a circle with an area of 95π ft²?
   - Use the formula: \( \text{Area} = \pi r^2 \).
   - \( 95\pi = \pi r^2 \).
   - \( r^2 = 95 \).
   - \( r = \sqrt{95} \approx 9.75 \) ft.

**Circle Practice Set 2**

1. What is the area of a circle with a diameter of 6 feet?
   - Use the formula: \( \text{Area} = \pi r^2 \), where \( r = \frac{d}{2} \).
   - \( r = \frac{6}{2} = 3 \) feet.
   - \( \text{Area} = \pi \times (3)^2 \approx 28.27 \) square feet.

2. What is the circumference of a circle with a diameter of 4.5 feet?
   - Use the formula: \( \text{Circumference} = \pi d \).
   - \( \text{Circumference} = \pi \times 4.5 \approx 14.14 \) feet.

3. What is the area of a circle with a radius of 3.1 cm?
   - Use the formula: \( \text{Area} = \pi r^2 \).
   - \( \text{Area} = \pi \times (3.1)^2 \approx 30.19 \) square cm.

4. What is the circumference of a circle with a radius of 0.5 meters?
   - Use the formula: \( \text{Circumference} = 2 \pi r \).
   - \( \text{Circumference} = 2 \pi \times 0.5 \approx 3.14 \) meters.

5. What is the circumference of a circle with a radius of 15 mm?
   - Use the formula: \( \text{Circumference} = 2 \pi r \).
   - \( \text{Circumference} = 2 \pi \times 15 \approx 94.25 \) mm.

Would you like more detailed solutions or have any specific questions? 

Here are 5 questions you can ask next:
1. How do you derive the area formula for a circle?
2. Can you explain how to convert between different units of measure for radius and diameter?
3. What are the practical applications of calculating the circumference of a circle?
4. How do you solve problems involving sectors and arcs of circles?
5. Can you show how to calculate the volume of a cylinder given its radius and height?

**Tip:** Always double-check your units and make sure they are consistent throughout your calculations.

Explore circle practice problems involving diameter, radius, area, and circumference with detailed solutions. Calculate the area and circumference of circles with given dimensions. Suitable for high school students studying geometry.

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