tranthithuylinhxinhq tranthithuylinhxinhq

14-01-2024
Mathematics

contestada

cho lăng trụ đứng ABCA'B'C' có đáy ABC là tam giác vuông tại A có AB=a,AC=a√3 A'C tạo với đáy 1 góc=30 độ tính thể tích khối lăng trụ

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