Question

the perimeter of a rectangular rug is 40 feet. its length is 12 feet. what is its width? 20 feet 8 feet 28 feet 10 feet

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. Given $P = 40$ and $l=12$.

Step2: Substitute values into formula

$40=2(12 + w)$.

Step3: Solve for $w$

First, divide both sides by 2: $\frac{40}{2}=12 + w$, so $20 = 12+w$. Then subtract 12 from both sides: $w=20 - 12$.

Answer:

B. 8 feet