Các câu hỏi tương tự
day lon la 2dm 3cm, day be la 1dm 5cm, chiều cao là 3/2 dm. day lon la 3/4m, day be la 2/3m, chieu cao la 4/5m
1 hinh thang co day lon =30 m. day be 20m . chieu cao = 1/2 day be . 1hinh tam giac co day la 40m va dien tich = dien tich hinh thang . tinh chieu cao cua tam giac do
day la 1 bai nhe cac ban nho giai cho mih day
1, Tinh dien tich hinh thang , biet :
a, Day lon la 2dm3cm , day be la 1dm5cm , chieu cao la 3/2 dm
b, Day lon la 3/4 m , day be la 2/3 m , chieu cao la 4/5 m
Giup mik voi
mot hinh thang co dien tich la 79.2cm2 chieu cao la 7.2cm tinh day lon cua hinh thang biet day lon hon day be 3cm
mot hinh thang co day lon la 45 , day be la 40 , chieu cao 20. 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.
Mot hinh thang co hieu hai day la 12cm. Day be bang3/5 day lon. Day lon bang 3/2 chieu cao. Tinh dien tich hinh thang
Mot hinh thang co tong do dai hai day la 42cm, chieu cao bang 1/2 day be, day be bang 3/4 day lon. Tinh dien tich hinh thang