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A. Gọi K là trung điểm của đoạn AD.. Cắt hình trụ đó bởi một mặt phẳng chứa trục của nó thì được thiết diện là một hình chữ nhật có chu vi 100cm. Tính thể tích của khối trụ được giới h[r]
[Xmin 2021] số 35 Đề khảo sát chất lượng lần 2 Toán 12 năm 2020-2021 trường THPT Quế Võ 1 (Bắc Ninh)
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