Question

1. one side of a rectangle is 3.1 centimeters long. another side is 2.2 centimeters wide. find the perimeter of the rectangle.

Explanation:

Step1: Recall perimeter formula

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

Step2: Substitute values

Let $l = 3.1$ cm and $w = 2.2$ cm. Then $P=2(3.1 + 2.2)$.

Step3: Calculate sum inside parentheses

First, calculate $3.1+2.2 = 5.3$. So $P = 2\times5.3$.

Step4: Multiply

$2\times5.3=10.6$ cm.

Answer:

$10.6$ cm