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 complete the edging? 

To determine how many lengths of garden edging you will need, we can start by converting all measurements to the same unit.

1. **Convert perimeter to millimeters (mm):**  
   The perimeter of the garden is 14 meters.  
   Since 1 meter = 1000 millimeters,  
   \[
   14 \text{ m} = 14 \times 1000 = 14000 \text{ mm}
   \]

2. **Length of each piece of garden edging:**  
   Each piece of garden edging is 1800 millimeters long.

3. **Calculate the number of pieces needed:**  
   Divide the total perimeter in millimeters by the length of each piece of garden edging to find out how many pieces are required.  
   \[
   \text{Number of pieces} = \frac{14000 \text{ mm}}{1800 \text{ mm}}
   \]

   Performing the division:  
   \[
   \frac{14000}{1800} \approx 7.78
   \]

Since you cannot purchase a fraction of a piece, you will need to round up to the next whole number. 

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

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Would you like more details or have any questions? Here are some related questions you might consider:

1. How would the calculation change if the lengths of garden edging were 2 meters instead?
2. What if the garden had a different shape, like a circle? How would you calculate the perimeter?
3. How would you calculate the amount of edging needed if the garden had an irregular shape?
4. What are some materials that garden edging can be made of, and how does that affect installation?
5. How would the number of lengths change if the edging needed to be placed inside the perimeter instead of along the outside?

**Tip:** Always round up when calculating materials for construction projects to ensure you have enough!

Learn how to calculate the number of garden edging lengths needed for a garden with a perimeter of 14 meters. Step-by-step solution includes measurement conversion and division. Suitable for elementary school students.

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