Các câu hỏi tương tự
mot hinh thang co day be la 12cm,day lon gap ruoi day be,chieu cao bang trung binh cong 2 day. tinh dien tich hinh thang ?
mot hinh thang co day lon la 4,5 dm day be la 2,7 dm chieu cao bang trung binh cong cua hai day . tinh dien tich hinh thang do
a/ mot hinh thang co dien tich la 20 m vuong day lon 55 dm va day be 45 dm tinh chieu cao hinh thang
b/ tinh trung binh cong hai day biet dien tich hinh thang bang 7 m vuong va chieu cao bang 2 m
1 thuc ruong hinh thang co day lon la 80m day be bang 3/5 day lon va chieu cao bang trung binh cong hai day tinh dien tich thua ruong do
1 hinh thang co day lon 42 cm day be bang 5/6 day lon chieu cao bang trung binh cong hai day tinh dien tich hinh thang
mot hinh thang co day lon 120dm day be bang 1/3 day lon chieu cao bang trung binh cong cua hai day tinh dien tich hinh thang do
mot thua ruong hinh thang co trung binh cong hai day la 75m day be kem day lon 24m chieu cao bang 1/2 day lon. tinh dien tich cua thua ruong do
mot manh dat hinh thang co day lon dai 56 m ,day be bang 45% day lon ,biet chieu cao bang trung binh cong cua hai day .tinh dien tich hinh thang
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.