Question

perimeter word problems
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?
meters

Explanation:

Step1: Recall perimeter formula

The perimeter formula for a rectangle is $P = 2(l + w)$, where $P$ is perimeter, $l$ is length and $w$ is width.

Step2: Substitute known values

We know that $P = 40$ meters and $w = 8$ meters. So, $40=2(l + 8)$.

Step3: Solve for length

First, divide both sides of the equation by 2: $\frac{40}{2}=l + 8$, which simplifies to $20=l + 8$. Then subtract 8 from both sides: $l=20 - 8$.

Answer:

12