Mot thua ruong hinh thang co dien tich la 14,19a,day lon dai hon day be 38mneu day lon tang them 6m thi dien tich tang len 49,5m2 tih do dai moi canh

Mot thua ruong hinh thang co dien tich la 14,19a,day lon dai hon day be 38mneu day lon tang them 6m thi dien tich tang len 49,5m2 tih do dai moi canh

1.cho hinh thang vuong co tong 2 day la 30 cm. Neu keo dai day be 5cm thi bang day lon nen dien tich tang len 40cm2. Tinh dien tich hinh thang.

2. cho hinh thang cuong day lon bang chieu cao bang nua day lon . Mo rong hinh chu nhat. Tinh dien tich hinh thang .

3.cho hinh thang co trung binh cong 2 day la 58,5m, neu tang day lon len 4m thi dien tich tang len 21,5 m2. Tim dien tich hinh thang.

mot manh vuon hinh thang co day be la 12 cm day lon gap 2 lan day be neu keo dai day lon 6 cm thi dien tich se tang len 24 m vuong  tinh dien tich hinh thang ban dau

mot thua ruong hinh thang co do dai day lon la 21 m va dai hon canh day be la 8,2 m neu mo rong day lon len 7 m thi dien tichg tang them 56 m tinh dien tich thua ruong

giai bai toan 1 hinh thang co day be bang 54 cm day lon 96 cm neu keo dai day lon them 10 cm thi dien tich tang len 80 cm2 tinh dien tich hinh thang

cho hinh tam giac abcd co day nho ab la 27cm , day lon cd la 48 cm neu keo dai day nho ve phia b them 5 cm thi dien tich cua hinh tang len 40 cm2.Tinh dien tich hinh thang da cho

mot thua ruong hinh thang co dien tich la 361.8m2 , day lon hon day be la 13.5m.Hay tinh do dai moi day, biet rang neu tang day lon them 5.6m thi dien tich thua ruong tang them 336m2

1.mot thua ruong hinh thang co day lon la 52m,day be bang 75%day lon .Neu tang day be len 10m.tang day lon 6m thi dien tich tang them 80 m .tinh dien tich thua ruong.