In the following figure (not to scale), ...

In the following figure (not to scale), `angle DAB + angle CBA = 90^@`, BC = AD, AB = 20 cm, CD = 10 cm, then the area of the quadrilateral ABCD is:

A

`150 cm^2`

B

`120 cm^2`

C

`100 cm^2`

D

`75 cm^2`

Text Solution

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The correct Answer is:

D

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