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Rectangle calculator - diagonals, area, perimeter, circumference, sides

Rectangle calculator will help you calculate the diagonal of the rectangle, the side length, height, area of the rectangle.


Rectangle area

$$ \Large{S=a\cdot b} $$
Side length (a)

Side length (b)

Rectangle area (S)

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Circumference / perimeter of a rectangle

$$ \Large{S=2 \cdot (a+b)=2a+2b} $$
Side length (a)

Side length (b)

Perimeter of a rectangle (L)

Diagonal of the rectangle

$$ \Large{d=\sqrt{a^2 + b^2}} $$
Side length (a)

Side length (b)

Diagonal (d)

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