Rectangular Area Calculator
The Rectangular Area Calculator computes the area of a rectangle based on two inputs: one side length and the length of the diagonal.
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Rectangle is a quadrilateral having opposing sides parallel and four right angles. To find the area of a rectangle you should multiply its length by its width. The equation is
However, you may know only the length of one side and the diagonal. Using the Pythagorean theorem, the calculator determines the length of the other side and then calculates the area by multiplying the two side lengths. If a and b are the sides, and d is the diagonal, the Pythagorean theorem states that
From there
and the final formula for the area of a rectangle is
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