Mot mieng dat hinh thang co dien thich 1053m2, biet rang neu tang day be them 4m thi duoc hinh thang moi co dien tich= 1107m2.Tim tong do dai day cua mieng dat?

1 mieng dat hinh thang co dien tich 1053m2, biet rang neu tang day be tham 4m thi duoc hinh thang moi co dien tich bang 1107m2. Tim do dai moi day cua mieng dat. 

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

mot manh dat hinh thang co dien tich la107,5 m2.Sau khi mo rong day nho 3 m,day lon 5 m thi dien tich manh dat tang them 43 m2.Tinh do dai moi day manh dat,biet day lon hon day be la 4 m

Mot manh dat hinh thang co dien tich 568m² , chieu cao 16m , day lon hon day be 6,5 m 

 a) Tinh do dai moi day cua manh dat hinh thang do .

 b) Neu day lon giam 4m va day be giu nguyen thi dien tich manh dat giam di bao nheu met vuong ?

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

tim 2 so co tong bang 450 biet lay so thu nhat chia cho 2 thi bang so thu hai nhan voi 2 ?

tim ab biet a+b=8  ab- ba= 36 ?

mot manh vuon hinh thang co dien tich 120met vuong day lon hon day be 6 m neu tang moi canh day cua hinh thang 3m thi dien tich manh vuon tang 18 met vuong tinh do dai moi canh day luc dau ?

mot manh dat hinh thang co dien tich la 455 m2 chieu cao la 13m tinh do dai moi day cua manh dat hinh thang do biet day be kem day lon 5m