Calculate Rectangle Perimeter: 18 × 2 Units Problem

Question

Calculate the perimeter of the rectangle below.

00:00 Calculate the perimeter of the rectangle

00:03 Apply the formula for calculating the rectangle perimeter - 2 x the sum of the sides

00:07 Insert the relevant values into the formula according to the given data and proceed to solve to find the area

00:10 Expand the brackets - multiply each factor

00:15 Solve each multiplication separately and then add together

00:20 This is the solution

To solve this problem, we'll start by identifying the given dimensions of the rectangle: the length $l = 18$ and the width $w = 2$ .

Next, we apply the perimeter formula for a rectangle, which is given by:

$P = 2(l + w)$

Substitute the given values for the length and width into the formula:

$P = 2(18 + 2)$

Calculating further, we find:

$P = 2 \times 20 = 40$

Thus, the perimeter of the rectangle is $40$ . Among the provided answer choices, this corresponds to choice 1.