Cho hình chóp S.ABCD có đáy ABCD...
Câu hỏi: Cho hình chóp S.ABCD có đáy ABCD là hình vuông và \(SA \bot \left( {ABCD} \right)\) . Trên đường thẳng vuông góc với (ABCD) lấy điểm S’ thỏa mãn \(S'D = \frac{1}{2}SA\) và S, S’ ở cùng phía đối với mặt phẳng (ABCD). Gọi V1 là thể tích phần chung của hai khối chóp S.ABCD và S’.ABCD. Gọi V2 là thể tích khối chóp S.ABCD. Tỉ số bằng \(\frac{{{V_1}}}{{{V_2}}}\)![](data:image/png;base64,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)
A. \(\frac{7}{{18}}\)
B. \(\frac{1}{{3}}\)
C. \(\frac{7}{{9}}\)
D. \(\frac{7}{{10}}\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 cụm 8 Trường Chuyên ĐB Sông Hồng