Question

the perimeter of a rectangle is 70 feet. if the length of one side is 18 feet, what is the length of the other side?

Explanation:

Step1: Recall perimeter formula

The perimeter formula of a rectangle is $P = 2(l + w)$, where $P$ is perimeter, $l$ is length and $w$ is width. Given $P=70$ and assume $l = 18$.

Step2: Substitute values into formula

We have $70=2(18 + w)$. First, divide both sides by 2: $\frac{70}{2}=18 + w$, so $35=18 + w$.

Step3: Solve for the other side

Subtract 18 from both sides: $w=35 - 18$.

Answer:

17 feet