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Mathematics, 25.07.2021 14:30 whitefang3153

Cho hình chóp S. ABCD có đáy ABCD là hình vuông cạnh a, SD = 3a2
. Hình chiếu vuông góc
của S trên mặt phẳng (ABCD) là trung điểm H
của AB. Khoảng cách từ A đến mặt phẳng (SBD)
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Cho hình chóp S. ABCD có đáy ABCD là hình vuông cạnh a, SD = 3a2
. Hình chiếu vuông góc
...
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