Mathematics
Mathematics, 24.07.2021 09:30, aliciatorrescollins

Cho hình chóp S. ABC có đáy là tam giác ABC vuông cân tại B, AB=a, biết SA=2a và SA (ABC) , gọi H và K lần

lượt là hình chiếu của A trên các cạnh SB và SC.
Xác định tâm I và tính bán kính R của mặt cầu qua các điểm A, B, C, H, K .

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Cho hình chóp S. ABC có đáy là tam giác ABC vuông cân tại B, AB=a, biết SA=2a và SA (ABC) , gọi H v...

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