Các câu hỏi tương tự
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. Cho hinh thang co day be 3/5 day lon, chieu cao 23cm. Keo dai day be day lon duoc hinh chu nhat dien tich tang len 207 cm2. Tinh dien tich hinh thang ban dau.2. Mieng dat hinh thang co dien tich 1053 m2. Neu tang day be 4m duoc hinh thang co dien tich bang 1107m2. Tim do dai moi day biet day lon hon day be 6m.3.Hinh thang co trung binh cong hai day 31cm. tang day be 3cm, day lon 6m thi dien tich tang len 36cm2. Tim dien tich hinh thang.4.Cho tam giac ABC. Tren AB lay AM bang 1/3 AB,tren AC la...
Đọc tiếp
1. Cho hinh thang co day be =3/5 day lon, chieu cao 23cm. Keo dai day be= day lon duoc hinh chu nhat dien tich tang len 207 cm2. Tinh dien tich hinh thang ban dau.
2. Mieng dat hinh thang co dien tich 1053 m2. Neu tang day be 4m duoc hinh thang co dien tich bang 1107m2. Tim do dai moi day biet day lon hon day be 6m.
3.Hinh thang co trung binh cong hai day 31cm. tang day be 3cm, day lon 6m thi dien tich tang len 36cm2. Tim dien tich hinh thang.
4.Cho tam giac ABC. Tren AB lay AM bang 1/3 AB,tren AC lay AN bang NCx2.
a) BN cat CM tai O.So sanh dien tich BOM va ONC.
b) Tinhdien tich ANB/ dien tich ABC.
c)Tinh dien tich tam giac ABC biet dien tich tam giac AMN= 16cm2.
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 bang 3/5 day lon va co chieu cao bang 23cm.Nguoi ta mo rong hinh thang bang cach keo dai day be cho bang day lon da duoc1 hinh chu nhat ,sau khi mo rong thi dien tich tang them 207cm vuong .Tinh dien tich hinh thang luc chua mo rong?
1 thua ruong hinh thang co day lon 52m day be bang 75% day lon neu tang day be them 10m tang day lon them 6m thi dien tich thua ruong se tang them 80m vuông tinh dien tich thua ruong
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
Bai 1 :Mot thua ruong hinh thangco trung binh cong hai day la 301,5 m . Neu tang day lon them 5,6 m thi dien tich thua ruong tang them 336 m2 a}tinh dien tich thua ruong hinh thang bang don vi dam2b}Cu 300 m2 thu duoc 22,5 tan thoc . Tinh xem tren ca thua ruong thu hoach duoc bao nhieu kilogam thoc ?Bai 2 : Mot hinh thang co dien tich 3780 m2 va chieu cao 45 m . Day be bang 3/5 day lon . Tinh moi day cua hinh thang ?Bai 3:Mot khu ruong hinh thang co chieu cao 50 m . Day lon 145 m ; day be 95 m ....
Đọc tiếp
Bai 1 :Mot thua ruong hinh thangco trung binh cong hai day la 301,5 m . Neu tang day lon them 5,6 m thi dien tich thua ruong tang them 336 m2
a}tinh dien tich thua ruong hinh thang bang don vi dam2
b}Cu 300 m2 thu duoc 22,5 tan thoc . Tinh xem tren ca thua ruong thu hoach duoc bao nhieu kilogam thoc ?
Bai 2 : Mot hinh thang co dien tich 3780 m2 va chieu cao 45 m . Day be bang 3/5 day lon . Tinh moi day cua hinh thang ?
Bai 3:Mot khu ruong hinh thang co chieu cao 50 m . Day lon 145 m ; day be 95 m . Moi met vuong thu hoach duoc 1,74 kg thoc . Hoi nguoi ta thu hoach duoc bao nhieu tan thoc tren thua ruong ay ?
Bai 4: Mot hinh thang co chieu cao 34 dm . Day lon gap doi day be . Dien tich hinh thang bang dien tich 1 hinh chu nhat chieu dai 68 dm ; chieu rong 30 dm . Tinh do daii moi day hinh thang ?
Bai 5 : Mot hinh thang co day lon 60 cm ; day be 38 cm . Neu keo dai day lon them 20 cm va day be 12 cm ve cung mot phia thi dien tich se tang them 512 cm2 . Tinh dien tich hinh thang luc dau ?
Bai 6:Mot hinh thang vuong co dien tich 85 dm2 va hieu 2 day la 3 dm . Neu keo dai day lon them 4 dm nua thi dien tich tang them 20 dm2 . Tinh do dai moi day cua hinh thang vuong do ?
giai han ra nha minh cho moi bai 100 mk nha tong cong se la 600 mk do nha ! ai giai xong ket ban luon voi minh nha ! thanks!
1 thua ruong hinh thang co day lon 52 m day be bang 75% day lon neu tang day be them 10m tang day lon them 6m thi dien tich thua ruong se tang them 80m vuong tinh dien tich thua ruong
mot mieng vuon hinh thang co dien tich bang dien tich mot mieng vuon hinh tam giac co day 50 m va chieu cao 37,5 m
a) tim day lon va day be cua mieng vuon hinh thang .biet chieu cao la 25m va day be bang 2/3 day lon
b) trong mieng vuon hinh thang ,nguoi ta trong cam chiem 40 % dien tich. tinh dien tich dat trong cam