Một cái phễu có dạng hình nón, chiều cao của phễu...
Câu hỏi: Một cái phễu có dạng hình nón, chiều cao của phễu là 20 cm. Người ta đổ một lượng nước vào phễu sao cho chiều cao của cột nước trong phễu bằng 10 cm. Nếu bịt kín miệng phễu và lật ngược phễu lên thì chiều cao của cột nước trong phễu gần bằng nhất với giá trị nào sau đây.![](data:image/png;base64,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)
A. 1,07 cm.
B. 10 cm
C. 9,35 cm
D. 0,87 cm
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Quang Trung - Bình Phước lần 2