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Mathematics, 21.09.2021 14:00 hailee6053

1. cho hình chóp tam giác đều S. ABC, có cạnh bên băng 2a; mặt bên hợp với đáy một góc 60 độ. Tính thể tích S. ABC? 2. cho hình chóp tứ giác đều S. ABCD, có cạnh bên bằng 2a; mặt bên hợp với đáy một góc 60 độ. Tính thể tích S. ABCD

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1. cho hình chóp tam giác đều S. ABC, có cạnh bên băng 2a; mặt bên hợp với đáy một góc 60 độ. Tính t...
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