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phuonglinhle083
2 năm trước
Một bể nước bằng tôn dạng hình hộp chữ nhật có chiều dài 2m, rộng 1,2m, chiều cao gấp 1,5 lần chiều rộng.. Hiện tại lượng nước trong bể bằng 75% thể tích của bể. Hiện tại trong bể có số lít nước là:
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