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Namloga2203
2 năm trước
Một thửa ruộng hình thang ABCD ; AB = 36 m là đáy nhỏ , CD là đáy lớn có CD bằng 2AB . Nếu kéo dài CD thêm một đoạn CM = 6 ta được diện tích tam giác BCM = 48 m2 a,Tính chiều cao của hình thang ABCD b,Tính diện tích hình thang ABCD c,Thửa ruộng được trồng lúa tính xem số lúa thu hoạch được của thửa ruộng biết rằng mỗi a thu hoạch được 45 kg lúa ( Mỗi a = 100 m2 )
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