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Câu 25:

Khối trụ tròn xoay có đường kính là $2a$ , chiều cao là

Câu 25: Khối trụ tròn xoay có đường kính là 2a2a2a, chiều cao là h=2ah = 2ah=2a có thể tích là:

Thông tin câu hỏi

Câu 25:

Khối trụ tròn xoay có đường kính là $2a$ , chiều cao là $h = 2a$ có thể tích là: