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Mathematics, 25.07.2021 21:50 cutiecat66

Cho hình chóp S. Abcd với abcd là hình chữ nhật có AB=a, AD=2a, SA vuông góc với đáy và SA=a. Gọi (P) là mặt phẳng qua SO và vuông góc với (SAD). Tính thiết diện của (P) và hình chóp S. ABCD

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Cho hình chóp S. Abcd với abcd là hình chữ nhật có AB=a, AD=2a, SA vuông góc với đáy và SA=a. Gọi (P...
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