Square area calculator tool is used to calculate area, perimeter and length of the diagonal of a square. Enter length of the one side of a square to calculate all parameters.

The formula for Area of a Square is: a^{2}, where 'a' is the side of a square.

The formula for Perimeter of a Square is: 4 a

The formula for Length of the Diagonal of a Square (d) is: √2 a

Square is a plane figure with four equal straight sides and four right angles.

A square is a kind of rectangle, and the perimeter of any rectangle is the sum of its four sides. Since all sides of a square are the same, perimeter=4a

The area of a square is equal to any one of its sides times any other: a * a . Since that's the same as s squared, area=a^{2}

To find the length of the diagonal of a square, multiply the length of one side by the square root of 2.

- It is a polygon with 4 sides of equal length and 4 right angle corners (90 degree corners).
- Since, it has 4 sides of equal length, a square is a regular quadrilateral.
- It is also a rectangle with equal sides and a rhombus with right angles.
- The area of a square is equal to the length of one side to the power of two (length squared).
- Its perimeter is 4 times the length of one side.
- A square has a larger area than all other quadrilaterals with the same perimeter.
- The diagonals of a square bisect each other at 90 degrees and are perpendicular.
- Opposite sides are parallel.
- The internal angles add to 360 degrees.
- A square has 4 lines of reflectional symmetry.
- Square shapes are often used by humans for design and engineering purposes such as town planning.

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