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 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?

trong mot manhdat co dien tich 240 m2.Nguoi ta dao mot cai gieng hinh tron co duong kinh 1,2.Bao quanh mieng gieng la mot thanh gieng co dien tich la 1,12m2.Tinh dien tich phan dat con lai .Biet manh dat tren la hinh thang vuong .Keo dai day be them 7,5m thi manh dat tro thanh  hinh chu nhat ,dien tich manh dat sau khi tang bang 125% so voi dien tich ban dau .Tinh day lon ,day be cua manh dat ban dau ? AI GIUP MINH VOI

mot manh dat hinh tam giac co dien tich la 210m vuong .neu mo rong day manh dat them 4,5 m nua thi dien tich se tang them 56,52m vuong . tim do dai day manh dat ban dau

mot manh dat hinh tam giac co do dai day la 40 m chieu cao co do dai bang 2/5 day

tinh dien tich cua manh dat do

nguoi ta mo rong day manh dat dai them mot doan nua thi dien tich manh dat tang them 40 m2  tinh do dai day duoc mo rong 

tinh ti so phan tram dien tich dat tang them va dien tich dat truoc khi chua mo rong

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.

1 manh dat hinh thang co day be 85m day lon 120m . neu keo dai day lon them 12m thi dien tich tang them 132m2 . tinh dien tich ban dau

mot mang dat hinh tam giac co dien tich la 210 m vuong . neu mo rong daymanh dat them 4,5 m nua thi dien tich se tang them 56,25 m vuong . tim do dai day manh dat ban dau

mot manh dat hinh chu nhat co do dai day la 35m.neu keo dai canh day them 5m thi dien tich se tang them 41m.tinh dien tich dam dat luc chua keo dai canh day