[ Mức 1] Diện Tích Xung Quanh Của Mặt Cầu Bán Kính 2R Là

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[ Mức 1] Diện tích xung quanh của mặt cầu bán kính 2R là A.4πR2 . B.43πR2 . C.16πR2 . D.163πR2 . Đáp án và lời giải Đáp án:C Lời giải:Lời giải Áp dụng công thức ta có: S=4π2R2=16πR2 .

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