mot hinh thang co day be 12cm day lon 18 cm khi keo chieu day lon 3cm thi dien tich tang 12cm2 tinh dien tich
Những câu hỏi liên quan
mot hinh thang co day lon 60cm day be 38cmneu keo dai day lon them 20 cm va day be 12cm ve cung mot phia thi dien tich se tang them 512cm vuong.Tinh dien tich hinh thang luc dau
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?
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!
Xem thêm câu trả lời
1.cho hinh thang vuong co tong 2 day la 30 cm. Neu keo dai day be 5cm thi bang day lon nen dien tich tang len 40cm2. Tinh dien tich hinh thang.
2. cho hinh thang cuong day lon bang chieu cao bang nua day lon . Mo rong hinh chu nhat. Tinh dien tich hinh thang .
3.cho hinh thang co trung binh cong 2 day la 58,5m, neu tang day lon len 4m thi dien tich tang len 21,5 m2. Tim dien tich hinh thang.
mot hinh thang co day lon 60 cm day be38 cm neu keo dai day lon them 20cm va day be 12 cm ve cung mot phia thi dien tich se tang them 512 cm vuong tinh dien tich hinh thang luc dau
mot manh vuon hinh thang co day be la 12 cm day lon gap 2 lan day be neu keo dai day lon 6 cm thi dien tich se tang len 24 m vuong tinh dien tich hinh thang ban dau
mot thua ruong hinh thang co dien tich la 228m2 day lon hon day be 14.2 m2 hay tinh day lon biet rang neu tang day be them 4 cm thi dien tich thua ruong tang 18 cm
mot dam ruong hinh thang co dien tich 1155m2 va co day be kem day lon 33m nguoi ta keo dai day be them 20m va keo dai day lon them 5m ve cung mot phia de duoc hinh thang moi dien tich hinh thang moi nay bang dien tich cua mot hinh chu nhat co chieu rong bang 30m va chieu dai 51m hay tinh day be day lon cua hinh thang ban dau
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.