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 will need, follow these steps:

1. **Convert the length of each garden edging strip to meters**: 
   Since the garden edging comes in 1800 mm lengths, convert that to meters:
   \[
   1800 \, \text{mm} = 1.8 \, \text{m}
   \]

2. **Divide the total perimeter by the length of one garden edging strip**:
   The perimeter of the garden is 14 meters, so divide 14 by 1.8:
   \[
   \frac{14}{1.8} \approx 7.78
   \]
   This means you will need just over 7.78 strips.

3. **Round up to the nearest whole number**:
   Since you can't buy a fraction of a strip, round up to the nearest whole number:
   \[
   7.78 \text{ strips} \rightarrow 8 \text{ strips}
   \]

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

Would you like any further details or explanations?

Here are five related questions:
1. What would the cost be if each length of edging costs $10?
2. How would the number of lengths change if the perimeter were 20 meters instead?
3. How much garden edging would be left over after completing the 14-meter perimeter?
4. Can you combine edging of different lengths to minimize waste?
5. What if the garden had an irregular shape — how would that affect the calculation?

**Tip**: Always check the conversion units carefully when dealing with measurements.

Find out how to calculate the number of garden edging strips required for a garden with a 14-meter perimeter. This problem involves unit conversion from millimeters to meters, basic division, and rounding. Suitable for students in Grades 5-7.

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