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atmat213
2 năm trước
8. Một khối gỗ hình lập phương có cạnh a= 20cm được thả vào trong một bình đựng nước hình trụ có tiết diện đáy là hình tròn có bán kính 18cm thì mực nước trong bình dâng lên thêm đoạn 6cm. a, tính KLR của khối gỗ và phần chìm của khối gỗ là bao nhiêu cm? b, muốn khối gỗ ngập hoàn toàn trong nước thì phải đặt lên mặt trên của khối gỗ một quả cân có khối lượng ít nhất là bao nhiêu? Giúp mk vs♥️♥️
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