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The area of a square, formula and the calculator for calculation of the area online. Formulas for calculation of the area of a square at various input datas are given.

1

## The area of a square through its party

**a**- side

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2

## The area of a square through its diagonal

**d**- diagonal

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3

## The area of a square through perimeter

**P**- perimeter

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4

## The area of a square through the piece which is carried out from square top to the middle of the opposite side

**k**- piece

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5

## The area of a square through an inradius

**r**- radius of inscribed circle

... preparation ...

6

## The area of a square through a circumradius

**R**- circumradius

... preparation ...