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(2010•攀枝花)如图所示,在梯形ABCD中,AB∥DC,BD⊥AD,AD=D...
(2010•攀枝花)如图所示,在梯形ABCD中,AB∥DC,BD⊥AD,AD=DC=BC=2cm,那么梯形ABCD的面积是
.
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