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 find out how many lengths of garden edging you need, follow these steps:

1. **Convert 1800mm to meters**:
   \[
   1800 \, \text{mm} = \frac{1800}{1000} = 1.8 \, \text{m}
   \]
   
2. **Divide the perimeter of the garden by the length of one garden edging**:
   \[
   \frac{14 \, \text{m}}{1.8 \, \text{m}} \approx 7.78
   \]

Since you can't purchase a fraction of an edging length, you'll need to round up to the nearest whole number, which is 8.

So, you will need to buy **8 lengths** of garden edging to cover the entire perimeter.

Would you like more details on this solution or have any questions?

Here are 5 related questions to consider:
1. How much total length of edging will you have if you buy 8 pieces?
2. What would the cost be if each length of edging is priced at $12?
3. What if the perimeter was 20 meters instead—how many lengths would you need?
4. How much leftover edging will you have after covering the garden?
5. How would the calculation change if the edging came in 2000mm lengths instead?

**Tip:** When dealing with units, always ensure they are consistent (e.g., converting millimeters to meters) before performing any calculations.

Learn how to calculate the number of garden edging lengths needed for a 14m perimeter. This problem involves unit conversion from millimeters to meters, basic division, and rounding to the nearest whole number. Suitable for students in Grades 5-7.

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