1 manh vuon hinh thang co dien tich la 225.75 m2 do dai canh day nho lam 125 dm va kem canh day lon 18 m neu mo rong day lon them 5.2 m thi dien tich tang them bao nhieu m2
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
1 manh vuon hinh thang co day lon 30 m day be 18 m nguoi ta mo rong day lon thanh 30 m thi dien tich tang them 60 m vvuong tinh dien tich manh vuon luc dau
mot manh vuon hinh thang co day be36m day lon 52m . Neu day lon tang them 4m thi dien tich se tang them 60m2. Tinh dien tich manh vuon hinh thang đó
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 hinh thang co day be la 19 cm va bang 1/2 day lon. Neu mo rong day lon them 4,5 cm thi dien tich tang them 27 cm2. Tinh dien tich hinh thang ban dau.
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 khu vuon hinh thang co day lon 68m, day be 42m. neu keo dai day lon them 15m ma van gi nguyen day be thi dien tich tang them 270m vuong. hoi ban dau dien tich ban doi rong bao nhieu hec ta?
mot manh dat hinh thang co day be 8.5m day lon 15m sau khi mo rong day lon them 3m thi dien tich manh dat tang 7.5m2 tinh dien tich hinh thang ban dau.