Cho tam giác ABC có diện tích bằng . M là trung điểm của đoạn thẳng AB, N là trung điểm của đoạn thẳng BM, Q là trung điểm của đoạn thẳng AC, P là trung điểm của đoạn thẳng QC. Diện tích tứ giác MNPQ là ................
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dien tch tu giac la :
48:3=16 (cm2)
dap so 16 cm2
dung 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
15cm bạn àh 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
dien h tu giac la:
20x20=40
dap so:40