如图,在梯形ABCD中,AD∥BC,∠ABC=90°,AB=20cm,CD=25cm,动点P,Q同时从点A出发,点P以3m/s的速度沿A-D-C的路线运动,点Q以4m/s的速度以A-B-C的路线运动,且PQ两点同时到达点C.(1)求梯形ABCD的面积(2)设PQ两
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![如图,在梯形ABCD中,AD∥BC,∠ABC=90°,AB=20cm,CD=25cm,动点P,Q同时从点A出发,点P以3m/s的速度沿A-D-C的路线运动,点Q以4m/s的速度以A-B-C的路线运动,且PQ两点同时到达点C.(1)求梯形ABCD的面积(2)设PQ两](/uploads/image/z/8349552-0-2.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAD%E2%88%A5BC%2C%E2%88%A0ABC%3D90%C2%B0%2CAB%3D20cm%2CCD%3D25cm%2C%E5%8A%A8%E7%82%B9P%2CQ%E5%90%8C%E6%97%B6%E4%BB%8E%E7%82%B9A%E5%87%BA%E5%8F%91%2C%E7%82%B9P%E4%BB%A53m%2Fs%E7%9A%84%E9%80%9F%E5%BA%A6%E6%B2%BFA-D-C%E7%9A%84%E8%B7%AF%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E7%82%B9Q%E4%BB%A54m%2Fs%E7%9A%84%E9%80%9F%E5%BA%A6%E4%BB%A5A-B-C%E7%9A%84%E8%B7%AF%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E4%B8%94PQ%E4%B8%A4%E7%82%B9%E5%90%8C%E6%97%B6%E5%88%B0%E8%BE%BE%E7%82%B9C.%EF%BC%881%EF%BC%89%E6%B1%82%E6%A2%AF%E5%BD%A2ABCD%E7%9A%84%E9%9D%A2%E7%A7%AF%EF%BC%882%EF%BC%89%E8%AE%BEPQ%E4%B8%A4)
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