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 need, follow these steps:

1. **Convert the length of the garden edging from millimeters to meters:**

   \[
   1800 \text{ mm} = \frac{1800}{1000} = 1.8 \text{ m}
   \]

2. **Calculate the total number of lengths needed by dividing the perimeter by the length of each edging piece:**

   \[
   \text{Number of lengths} = \frac{14 \text{ m}}{1.8 \text{ m/length}} \approx 7.78
   \]

3. Since you can't buy a fraction of a length, round up to the next whole number:

   \[
   \text{Number of lengths needed} = 8
   \]

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

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

Here are some related questions to consider:
  
1. What if the perimeter of the garden changes?
2. How much will the garden edging cost if each length has a specific price?
3. How can you minimize waste when cutting the edging to fit exactly?
4. What if the lengths of edging available are different from 1800mm?
5. How would the calculation change if you need to account for overlap or corners?

**Tip:** Always round up when buying items that need to cover a certain measurement to ensure you have enough material.

Learn how to calculate the number of garden edging pieces needed for a garden with a 14m perimeter. This problem covers key concepts such as unit conversion, division, and rounding. Find out how many 1.8m edging pieces you'll need. Suitable for students in Grades 5-7.

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