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yenthanh102
2 năm trước
Cho lăng trụ ABC.A'B'C' có đáy ABC là tam giác vuông tại A, AB=1,AC=2. Hình chiếu của A' lên mặt phẳng (ABC) trùng với trung điểm BC. Biết khoảng cách giữa hai đường thẳng CC' và A'B là $\sqrt[]{2}$ . Thể tích khối lăng trụ đã cho bằng
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