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 are needed, we need to convert the garden edging length from millimeters (mm) to meters (m) for consistency.

1. Each garden edging length is 1800 mm, which equals:
   \[
   1800 \, \text{mm} = \frac{1800}{1000} \, \text{m} = 1.8 \, \text{m}
   \]
2. The total perimeter of the garden is 14 meters.
3. To find how many 1.8-meter lengths are needed to cover 14 meters, we divide:
   \[
   \frac{14 \, \text{m}}{1.8 \, \text{m}} = 7.78
   \]
4. Since you can't buy a fraction of a length, you'll need to round up to the nearest whole number, which is 8.

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

Would you like more details or have any questions?

Here are 5 related questions:
1. How can you minimize waste when cutting the edging to fit exactly?
2. What is the cost per length if one edging costs $10?
3. If each length weighs 2 kg, what is the total weight of the edging?
4. How would the calculation change if the edging was 2000mm instead?
5. What happens if the perimeter changes to 20 meters?

**Tip:** Always round up when calculating materials for projects that come in fixed lengths to ensure full coverage.

Find out how to calculate the number of garden edging lengths needed for a garden with a 14-meter perimeter, using 1800mm lengths of edging. This solution covers unit conversion, division, and rounding concepts. Perfect for students in Grades 5-7.

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