Question

Lulu has exactly enough fencing to go around her rectangular garden. She has 40 meters of fencing. The garden is 8 meters wide.
What is the length of her garden?

Answer 1

Answer:

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Step-by-step explanation:

Given

Width of garden W = 8 m

Total fencing T = 40 m

If Lulu has enough fencing to go around her rectangular garden then , it should be equal to perimeter of garden

Suppose L is the length of garden

Therefore perimeter is P = 2(L+W)

2(L+ W) = 40

L+W = 20

L = 20 - 8 = 12 m

thus length of fencing is 12 m

Answer 2

Answer:

12 metres long.

Step-by-step explanation:

1. The fence goes around the outside of the area, so we know the perimeter.

We can find the perimeter by adding all of the side lengths.

2. A rectangle has 4 sides.

3. We know the width of the rectangle is 8 m.

In rectangles, opposite sides are equal. So if we know the top width is 8 meters, then we also know the bottom width is 8 meters.

4. 8 m + $l$ + 8 m + $l$ = 40 m

5. 8 m + 12 m + 8 m + 12 m = 40 m

The missing side length is 12 metres long.

6. So, Lulu's garden is 12 metres long.