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luonganhquan123
2 năm trước
Cho tam giác ABC, điểm M thuộc cạnh CA. Vẽ MP // AB (P thuộc BC) và MN // CB (N thuộc AB). Biết diện tích tam giác AMN bằng 4cm^2 và diện tích tam giác PMC bằng 9cm^2. Khi đó, diện tích hình bình hành NMPB bằng bao nhiêu?
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