1 hinh thang co day nho bang 3/4m day lon gap 4 lan day nho chieu cao gap 2,5 day nho tinh dien tich hinh thang do
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 bang 48 dm , day be bang 25 phan tram day lon va chieu cao bawng 75 phaan tram day be .Tinh dien tich hinh thang
1 hinh thang co tong do dai 2 day la 42 cm . chieu cao bang day be , day be bang 3phan 4 day lon .tinh dien tich hinh thang
nho giai cho minh nhe ma giai co ca loi giai phep tinh va dap so nhe
Mot manh dat hinh thang co day lon hon day be 18m day lon gap ruoi day be chieu cao bang 5 phan 6 day lon . Tinh dien tich cua manh dat do
mot hinh thang co day lon 12cm, day be 8 cm va dien tich bang dien tich hinh vuong canh 10 cm. Tinh chieu cao hinh thang
mot hinh thang co day be bang 3/5 day lon va co chieu cao bang 23cm.Nguoi ta mo rong hinh thang bang cach keo dai day be cho bang day lon da duoc1 hinh chu nhat ,sau khi mo rong thi dien tich tang them 207cm vuong .Tinh dien tich hinh thang luc chua mo rong?