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?

To determine how many lengths of garden edging you'll need, follow these steps:

1. **Convert the perimeter to millimeters**:  
   $ 14 \, \text{meters} = 14,000 \, \text{millimeters} $

2. **Calculate the number of lengths needed**:  
   Each garden edging length is $ 1800 \, \text{millimeters} $.
   \[
   \text{Number of lengths} = \frac{14,000 \, \text{mm}}{1800 \, \text{mm/length}} \approx 7.78
   \]

3. **Round up to the nearest whole number**:  
   Since you can't purchase a fraction of a length, round up $ 7.78 $ to the next whole number, which is $ 8 $.

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

Would you like more details on this calculation, or do you have any questions?

Here are 5 related questions you might find useful:
1. How can you calculate the cost if each length of garden edging costs $5?
2. What if the garden perimeter was 20 meters instead of 14 meters?
3. How would the calculation change if the lengths were 2 meters instead of 1800 millimeters?
4. How can you calculate the amount of garden edging needed for a circular garden?
5. What tools can help in precisely measuring the garden perimeter?

**Tip:** Always measure your garden perimeter accurately before purchasing materials to avoid excess costs.

Determine how many lengths of garden edging are needed for a 14-meter perimeter when each length measures 1800 millimeters. This problem involves measurement conversion, division, and rounding, suitable for students in Grades 4-6.

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