Question

a classroom board is 36 inches wide and 24 inches tall. cheryl is putting ribbon along the outside edge of the board. how many inches of ribbon will she need? a 156 inches b 120 inches c 90 inches d 60 inches

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: Identify length and width

Here, $l = 36$ inches and $w = 24$ inches.

Step3: Substitute values

$P=2(36 + 24)$.

Step4: Calculate sum inside parentheses

$36+24 = 60$.

Step5: Multiply by 2

$P = 2\times60=120$ inches.

Answer:

B. 120 inches