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Cho hình lăng trụ tam giác đều có cạnh đáy bằng 2a và có các mặt bên đều là hình vuôngA. Thể tích khối lăng trụ đã cho bằng.[r]
Đề thi thử môn Toan trường THPT Ngo Gia Tu - Khanh Hoa -2019 - [blogtoanhoc.com]
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