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, we will follow these steps:

1. **Convert the garden edging length from millimeters to meters**:
   \[
   1800 \, \text{mm} = 1.8 \, \text{m}
   \]
   
2. **Divide the total perimeter of the garden by the length of each edging piece**:
   \[
   \frac{14 \, \text{m}}{1.8 \, \text{m}} = 7.78
   \]
   
3. Since you can't purchase a fraction of a length, you'll need to round up to the nearest whole number:
   \[
   \lceil 7.78 \rceil = 8
   \]

Therefore, you will need to buy **8 lengths** of garden edging to cover the 14-meter perimeter.

Would you like more details or have any further questions?

Here are 5 related questions for further exploration:
1. How much excess edging will you have after covering the garden perimeter?
2. If the perimeter was 20m, how many lengths would you need?
3. What is the total cost if each 1800mm length costs $12?
4. How much perimeter could you cover with 10 lengths of garden edging?
5. If each length was 2 meters, how would the number of lengths change?

**Tip:** Always round up when purchasing items like this, as you'll need full pieces to cover the entire length.

Learn how to calculate how many garden edging lengths are needed for a 14m garden perimeter. This solution involves converting measurements, dividing the perimeter by the edging length, and rounding up to the nearest whole number. Suitable for students in Grades 5-7.

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