Perimeter of a square
Kapitoly: Perimeter of a square, Perimeter of a rectangle, Circumference of a circle, Perimeter of a parallelogram, Perimeter of a trapezoid, Perimeter of a triangle
The perimeter of a square is the sum of the lengths of all four sides. If a side has length a, then the perimeter of the square, denoted by o, is equal to
$$\Large o = 4 \cdot a$$
In the following figure, there is a square with side length a = 5. Its perimeter is thus
$$\Large o = 4 \cdot 5 = 20$$
