Rectangle Area Online Calculator (6 ways)

This online calculator will help you find the area of a rectangle. The solution can be found by six different methods.
Using this calculator, you can get a detailed step-by-step solution with an explanation and output of formulas. Thanks to this, you will be able to understand the algorithm for finding the area of a rectangle. You can also check the calculations that have already been performed.
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Rectangle area calculation method
Side a (or b): Diagonal d:

Rectangle

A rectangle is a geometric shape that has four right angles (90°) and opposite sides are equal and parallel.
Rectangle area formula Rectangle area formula Diagonally and sideways or Rectangle area formula Diagonally and sideways where d is diagonal, a or b - side.

Solution:
S =
d2-a2
=
1234562-42
=
15241383936-16
=
15241383920
=
4·123456
=
493824

a: Area of a rectangle with a diagonal 123456 and side 4 equal to 493824
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