Mathematics, 24.07.2021 02:20 mattosmiriah5533

Cho tam giác abc vuông tại a có B=60,cạnh bc=2a . Quay tam giác này xung quanh cạnh ab. Tính diện tích xung quanh , thể tích của hình được tạo thành

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Cho tam giác abc vuông tại a có B=60,cạnh bc=2a . Quay tam giác này xung quanh cạnh ab. Tính diện tí...

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