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The image contains a mathematical problem involving unit conversion. Let's focus on the text clearly visible:

1. **Question 9**: Convert these measurements to centimeters:
   - a) 73.1 mm
   - b) 0.0012 km

2. **Question 10**: Convert these measurements to cm²:
   - a) 721 mm²
   - b) 2.006 m²

Let's solve these:

### **Question 9: Convert to centimeters**
- **a) 73.1 mm**  
  Since 1 cm = 10 mm,  
  \( 73.1 \, \text{mm} = \frac{73.1}{10} = 7.31 \, \text{cm} \).

- **b) 0.0012 km**  
  Since 1 km = 100,000 cm,  
  \( 0.0012 \, \text{km} = 0.0012 \times 100,000 = 120 \, \text{cm} \).

### **Question 10: Convert to square centimeters**
- **a) 721 mm²**  
  Since \(1 \, \text{cm}^2 = 100 \, \text{mm}^2\),  
  \( 721 \, \text{mm}^2 = \frac{721}{100} = 7.21 \, \text{cm}^2 \).

- **b) 2.006 m²**  
  Since \(1 \, \text{m}^2 = 10,000 \, \text{cm}^2\),  
  \( 2.006 \, \text{m}^2 = 2.006 \times 10,000 = 20,060 \, \text{cm}^2 \).

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Would you like more details or further clarifications on any of these conversions?

Here are some related questions you could explore:
1. How do you convert square kilometers to square centimeters?
2. What is the conversion factor between square millimeters and square meters?
3. How can you convert between cubic units, like cubic centimeters to cubic meters?
4. What is the relationship between meters and decimeters in area measurements?
5. How do you handle conversion between units in different dimensions (e.g., length, area, volume)?

**Tip:** Always keep track of the powers of 10 when converting between squared or cubed units!

Convert these measurements to centimeters and square centimeters.

Learn how to convert measurements like 73.1 mm, 0.0012 km, 721 mm², and 2.006 m² to centimeters and square centimeters. This problem covers unit conversion concepts suitable for students in Grades 6-8.

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