Mathematics, 16.06.2021 14:00 brittneyzenger001
Cho hình chóp S. ABC có đáy là tam giác đều cạnh 2a. Tam giác SAB đều và nằm trong mặt phẳng vuông góc với đáy . Gọi M là trung điểm BC , N thuốc AC sao cho AN =1/2NC , G là trọng tâm tam giác SBC. Tính thể tích khối chóp G. NMC
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Cho hình chóp S. ABC có đáy là tam giác đều cạnh 2a. Tam giác SAB đều và nằm trong mặt phẳng vuông g...
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