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Mathematics, 22.07.2021 18:00 VinTAEge

Chóp S. ABCD có đáy là vuông cạnh =4a. Các mặt bên cùng tạo với đáy góc 45o
. Gọi M, N, P là trung
điểm SA, SB, SC. Lấy Q trên cạnh SD sao cho
SD=3SQ. Tính thể tích
a) Chóp S. MNP.
b) Khối đa diện SMNPQ

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Chóp S. ABCD có đáy là vuông cạnh =4a. Các mặt bên cùng tạo với đáy góc 45o
. Gọi M, N, P là...
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