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Let ABCD be a quadrilateral with area 18, with side AB parallel to the side CD and AB = 2CD. Let AD be perpendicular to AB and CD.

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Let ABCD be a quadrilateral with area 18, with side AB parallel to the side CD and AB = 2CD. Let AD be perpendicular to AB and CD. If a circle is drawn inside the quadrilateral ABCD touching all the sides then its radius is

(a) 3

(b) 2

(c) 3/2

(d) 1

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Correct option is (b) 2

ABCD is a trapezium (∵ AB parallel to CD)

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