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Câu 30:

Cho hai điểm là $A(1;2),B( - 3;1)$

Câu 30: Cho hai điểm là A(1;2),B(−3;1)A(1;2),B( - 3;1)A(1;2),B(−3;1), đường tròn (C) có tâm nằm trên trục Oy và đi qua hai điểm A, B có bán kính bằng:

Thông tin câu hỏi

Câu 30:

Cho hai điểm là $A(1;2),B( - 3;1)$ , đường tròn (C) có tâm nằm trên trục Oy và đi qua hai điểm A, B có bán kính bằng: