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Find the area of the quadrilateral ABCD ...

Find the area of the quadrilateral ABCD in Which BCD is an equilateral triangle, each of whose sides is 26 cm, AD = 24 cm and `angle BAD = 90^(@)`. Also, find the perimeter of the quadrilateral. (Given, `sqrt(3)=1.73`.)

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The correct Answer is:
412.37 `cm^(2)`, 86 cm
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