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 length of the garden edging from millimeters to meters**:
   \[
   1800 \text{ mm} = 1.8 \text{ m}
   \]

2. **Divide the perimeter of the garden by the length of each garden edging**:
   \[
   \frac{14 \text{ m}}{1.8 \text{ m}} \approx 7.78
   \]

3. **Since you can't purchase a fraction of a length, round up to the nearest whole number**:
   \[
   \text{You will need } 8 \text{ lengths of garden edging.}
   \]

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

Would you like more details or have any other questions?

Here are five related questions for further exploration:
1. What would be the cost if each length of garden edging is priced at $12?
2. How many meters of edging would be left over after installation?
3. If the garden shape changes and the perimeter increases to 18 meters, how many lengths would be needed then?
4. How much garden edging would you need if the perimeter was reduced to 10 meters?
5. If you only had 7 lengths, how much of the garden would remain unedged?

**Tip:** Always round up when purchasing items sold in whole units, even if the calculated amount is slightly less than a whole number.

Learn how to calculate the number of garden edging lengths needed for a garden with a 14-meter perimeter. Understand the conversion from millimeters to meters, division to determine number of lengths required, and rounding up to the nearest whole number. Suitable for elementary to middle school students.

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