Mathematics, 22.07.2021 17:50 R3nNyx

Câu 1: cho hình chóp S. ABC có đáy là tam giác đều cạnh bằng a, cạnh bên SB vuông góc với mặt phẳng (ABC) , SB =2a. Tính thể tích khối chóp S. ABC Câu 2: Cho hình chóp S. ABC với SA, SB, SC đôi một vuông góc và SA=SB=SC +a . TÍnh thể tích của khối chóp S. ABC.

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Câu 1: cho hình chóp S. ABC có đáy là tam giác đều cạnh bằng a, cạnh bên SB vuông góc với mặt phẳng...

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