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	Các bình luận về: Đề: Cho hình chóp S.ABC có \(SC = 2a,SC \bot \left( {ABC} \right)\). Đáy ABC là tam giác vuông cân tại B và có \(AB = a\sqrt 2 \). Mặt phẳng \(\left( \alpha  \right)\) đi qua C và vuông góc với SA, cắt SA, SB lần lượt tại D, E. Tính thể tích khối chóp S.CDE.	</title>
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