Hello!
First, let me draw a rectangle:
• length: 5 cm
,• width: 3 cm
To obtain the area of a rectangle, we will have to use the formula below:
[tex]\text{Area}=\text{length}\cdot\text{width}[/tex]So, as we know its values, we just have to replace them in the formula:
[tex]\begin{gathered} \text{Area}=5cm\cdot3cm \\ \text{Area}=15cm^2 \end{gathered}[/tex]In the image, we have some squares inside the rectangle, right?
Each square corresponds to 1cm² of area. If we count all inside the rectangle, we will obtain:
• 5cm² in the first line
,• 5cm² in the second line
,• 5cm² in the third line
If we sum all of them, we will have the same 15cm² that we obtained in the formula.
