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 dien tich 1053 cm vuong biet rang neu tang day be them 4 cm thi duoc hinh thang moi co dien tich bang 1107 cm vuong tim do dai day be day lon cua hinh thang biet rang hieu hai day bang 14 cm

mot thua ruong hinh thang co dt la 5,9 dam2.day lon hon day be 12m neu tang day lon them 6m thi dt tang them 6,5m2. tinh do dai moi day

Mot mieng dat hinh thang co dien tich 864m vuong day lon hon day be 12m. Nguoi ta mo rong mieng dat bang cach tang day lon them 5m thi duoc mot mieng dat moi co dien tich bang 924m vuong. Tim do dai be va day lon cua manh dat hinh thang luc chua mo rong

1 dam dat hinh thang co dien tich 129,5 m2 va chieu cao 3,5 m Tinh do dai moi day cua dam dat hinh thang,biet rang day be bang 2/3 day lon

mot thua ruong hinh thang co day lon 52m day be bang 75 % day lon , neu tang day be tthem 10m tang day lon 6m thi dien tich thua ruong se tang them 80 met vuong . tinh dien tich thua ruong do

1 mieng dat hinh thang co day lon bang 5/3 day be va lon hon day be 28m.neu keo day lon ra 6m thi dien tich se tang 90m2. tinh dien tich hinh thang do

Mot manh dat hinh thang co day lon bang 75m,day be bang 75% day lon va bang chieu cao.

a,tinh dien tich hinh thang do

b,neu nguoi ta muon tang dien tich manh dat hinh thang them 75m²2 nua thi phai keo dai day be them bao nhieu m?

mot manh vuon hinh thang co day be bang 90m day lon bang 5/3 day be va chieu cao bang 3/4 day lon 

a tinh dien tich manh vuon hinh thang

b neu tang day lon them 2,5m thi dien tich phan tang them cua manh vuon do la bao nhieu met vuong