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Mathematics, 07.08.2021 17:40 rosarioemily580

Cho hình lăng trụ tam giác đều ABC. A’B’C’ có chiều cao bằng a và 2 đường thẳng AB’, BC’ vuông góc với nhau. Tính thể tích khối lăng trụ và diện tích xung quanh của nó.

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Cho hình lăng trụ tam giác đều ABC. A’B’C’ có chiều cao bằng a và 2 đường thẳng AB’, BC’ vuông góc...

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