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The question asks how many lengths of garden edging, each 1800 mm long, are needed to cover a garden with a perimeter of 14 meters.

### Steps to solve:
1. **Convert units**: 
   - 14 meters = 14,000 millimeters (since 1 meter = 1000 millimeters).

2. **Calculate the number of lengths needed**: 
   - Divide the total perimeter by the length of one piece of edging:  
     \[
     \frac{14,000 \text{ mm}}{1,800 \text{ mm}} \approx 7.78
     \]
   - Since the answer must be a whole number, round up to 8.

Thus, you will need to buy **8 lengths** of garden edging.

Would you like more details, or do you have any further questions?

Here are some related questions for further practice:
1. What if the perimeter was 20 meters instead of 14 meters?
2. If the garden edging was 2000 mm long, how many pieces would you need for the 14m perimeter?
3. How would you calculate the perimeter if you were given the dimensions of the garden?
4. What if the garden edging came in 2.5-meter lengths instead?
5. Can you calculate the total cost if each length of garden edging costs $5?

**Tip**: Always ensure that units are consistent when solving these types of problems!

You need garden edging for a garden with a perimeter of 14m. Garden edging comes in 1800mm lengths. How many lengths will you need to buy to have enough edging for the entire perimeter?

Learn how to calculate the number of 1800mm garden edging lengths needed for a garden with a perimeter of 14 meters. This problem involves unit conversion, division, and rounding, suitable for students in Grades 6-8.

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