chiều dài là
33,5*5/2=83,75m
diện tích thử ruộng là
2805,625m2
cả thửa ruộng thu hoạch dc số kg là
2805,625/10*5=1402,8125kg
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mot thua ruong hinh chu nhat co chieu rong bang 3\7 chieu dai va rong kem chieu dai 360m
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b,Biet rang cu 1m2 thua ruong nguoi ta thu hoach duoc 7kg thoc. Hoi tren thua ruong do,nguoi ta thu hoach duoc bao nhieu ta thoc?
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