Diagonals at right angle

In the trapezoid ABCD this is given:
AB=12cm
CD=4cm
And diagonals crossed under a right angle. What is the area of this trapezoid ABCD?

Result

S =  64 cm2

Solution:

Solution in text S =

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To solve this verbal math problem are needed these knowledge from mathematics:

See also our right triangle calculator. See also our trigonometric triangle calculator.

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