Các câu hỏi tương tự
mot truong tieu hoc co manh dat hcn.neu tang chieu dai 4m,chieu rong tang them 5m thi dien tich tang them 225m vuong.neu chi co chieu rong tang them 5m thi dien tich tang them150m vuong. tinh dien tich hinh chu nhat ban dau
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 hinh thang co day be 12cm day lon 18 cm khi keo chieu day lon 3cm thi dien tich tang 12cm2 tinh dien tich
co mot cai san hinh binh hanh co canh day la 25m. nguoi ta mo rong canh day cua cai san them 3m thi dien tich tang them 51m.tinh dien tich cai san ban dau
mot manh vuon hinh chu nhat neu tang chieu rong de bang chieu dai cua no thi dien tich tang them 75m2 con khi giam chieu dai cho bang chieu rong thi dien tich giam 50m2 tinh dien tich manh vuon hinh chu nhat
mot manh vuon hinh chu nhat co chu vi = 220m tang chieu dai 5m , giam chieu rong 5m thi dien tich giam 225 m2. Tinh dien tich ban dau
mot thua ruong hinh chu nhat co chieu dai gap 3 lan chieu rong. sau khi bot chieu dai di 4m va them vao chieu rong 4m thi dien tich thua ruong tang them 112m2. tinh dien tich thua ruong ban dau?
mot manh vuon hinh chu nhat co chieu dai gap 4 lan chieu rong tinh dien tich manh vuon hinh chu nhat do biet rang neu tang chieu dai them 3 m giam chieu rong di 3 m thi dien tich giam di 27 met vuong
Mot hinh chu nhat co chieu dai gap 3 lan chieu rong .Sau khi tang chieu dai them 15cm va giu nguyen chieu rong thi dien tich tang them 150cm2 .Tinh dien tich ban dau