梯形ABCD中,AD‖BC,对角线AC、BD交于O,△AOD的面积为4,△BOC的面积为9,梯形ABCD的面积为( )
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![梯形ABCD中,AD‖BC,对角线AC、BD交于O,△AOD的面积为4,△BOC的面积为9,梯形ABCD的面积为( )](/uploads/image/z/2395363-67-3.jpg?t=%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAD%E2%80%96BC%2C%E5%AF%B9%E8%A7%92%E7%BA%BFAC%E3%80%81BD%E4%BA%A4%E4%BA%8EO%2C%E2%96%B3AOD%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA4%2C%E2%96%B3BOC%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA9%2C%E6%A2%AF%E5%BD%A2ABCD%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA%EF%BC%88+%EF%BC%89)
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