Các câu hỏi tương tự
1 hinh thang co day be la 12dm; day lon la 4/3 day be. neu keo dai day lon ra 5dm thi dien tich tang them 20dm2. tinh dien tich ban dau.
Mot hinh thang co day be la 19 cm va bang 1/2 day lon. Neu mo rong day lon them 4,5 cm thi dien tich tang them 27 cm2. Tinh dien tich hinh thang ban dau.
hinh thang co day be 19cm day lon 25cm.neu tang day lon ve mot phia 6cm thi dien tich hinh thang tang them 54cm2.Tinh dien tich hinh thang ban dau
mot dam dat hinh thang co dien tich 369 met vuong day be bang 2/3 day lon neu tang day lon them 5,6m thi dien tich tang them 33,6m . Tinh do dai moi canh day cua dam dat hinh thang ban dau
Mot hinh thang co day be 12cm,day lon dai 18cm.Neu mo rong day lon them 5cm thi dien tich tang them 20cm2 Tinh dien tich hinh thang ban dau
mot hinh thang co day nho la 14cm va bang 1/2 day lon.neu mo them 4,5cm thi dien tich tang them 27cm2.tinh dien tich hinh thang ban dau
cho hinh thang co day lon hon daY be 6,5 m nguoi ta mo rong day lon them 6,5 m thi dien tich tang them 50,7 m2 tinh dien tich hinh thang ban dau
mot manh dat hinh thang co day be 8.5m day lon 15m sau khi mo rong day lon them 3m thi dien tich manh dat tang 7.5m2 tinh dien tich hinh thang ban dau.
1 hinh thang co hai day lan luot la 16cm, 18cm. Neu keo dai day lon 4cm thi dien tich tang them 11,2cm2. Tinh dien tich hinh thang ban dau.
GIUP MINH VS A MINH DANG CAN GAP.