Question

find the perimeter of a rectangle with length of 8 ft and width of 4 ft.
12
24
36
48

Explanation:

Step1: Recall perimeter formula

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

Step2: Substitute values

Substitute $l = 8$ and $w = 4$ into the formula: $P=2(8 + 4)$.

Step3: Calculate inside parentheses first

$8+4 = 12$, so $P = 2\times12$.

Step4: Multiply

$2\times12=24$.

Answer:

B. 24