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Perimeter and area of squares and rectangles

Learn all the formulas to calculate the **perimeter** and the **area** of **rectangles** and **squares**.

How to calculate the **perimeter** and the** area** of rectangles and squares?

Learn all the formulas to calculate the perimeter and the area of rectangles and squares.

Discover how to solve geometry problems with **rectangles** and **squares**.

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Table of contents of this lesson: Perimeter and area of squares and rectangles

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Learn FREE with videos and interactive exercises

You already know that the square is a special rectangle.

What is the area of a square whose sides measure 3 cm?

Divide the square into small equal squares of 1 cm: it takes 9 units to fill the square.

The area of the square is given by the** multiplication of one side by itself**:

**A** = **l** x **l** =** l**£$^2$£

## Perimeter of squares and rectangles