S ban dau la 50 m2
S tang them la 70 m2
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bai 1 :1 thua dat hinh tam giac co day la 25m neu keo dai day them 5 m thi dien tich thua dat tang them 50 m2 tinh dien tich thua dat ban daubai 2 : 1 hinh tam giac vuong co tong hai canh goc vuong la 62 cm canh goc vuong nay bang 3/2 canh goc vuong kia tinh dien tich cua hinh tam giacbai 3: nguoi ta xay 1 bon hoa hinh tam giac co day la 6m va chieu cao la 3,5 m o giua cai san hinh vuong co chu vi la 64 m tinh dien tich san con lai sau kghi lam bon hoabai 4 : 1 hinh tam giac co day la 20,5 m ne...
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bai 1 :1 thua dat hinh tam giac co day la 25m neu keo dai day them 5 m thi dien tich thua dat tang them 50 m2 tinh dien tich thua dat ban dau
bai 2 : 1 hinh tam giac vuong co tong hai canh goc vuong la 62 cm canh goc vuong nay bang 3/2 canh goc vuong kia tinh dien tich cua hinh tam giac
bai 3: nguoi ta xay 1 bon hoa hinh tam giac co day la 6m va chieu cao la 3,5 m o giua cai san hinh vuong co chu vi la 64 m tinh dien tich san con lai sau kghi lam bon hoa
bai 4 : 1 hinh tam giac co day la 20,5 m neu giam day 4,7 m thi dien tich giam 35,72 m tinh dien tich hinh tam giac luc dau
giup minh voi minh dang tat can cau tra loi
mot thua dat hinh tam giac co day la 25 m neu keo dai day them 5 m thi dien tich se tang them 50 m2 tinh dien tich thua ruong ban dau
Bài 1:1 mieng dat hinh tam giac co hieu giua day va chieu cao la 10,5m. tinh dien tich mieng dat do, biet rang neu tang canh day them 3,6m thi dien tich mieng dat se tang them 79,2m2
Bài 2:1 mieng vuon hinh tam giac co đỉnh A va day BC dai 45m. neu keo dai canh day BC them 1 doan CD dai 15m thi dien tich se tang them 225m2.
,tinh dien tich mieng vuon do bang đơn vị ha
mot thua dat hinh tam giac co chieu cao la 10 m . hoi neu keo dai day them 4m thi dien tich se tang them bao nhieu m vuong
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!
Mot thua dat hinh tam giac co day la 24,5m.Neu keo dai day them 5m thi dien tich se tang them 40m vuong.Tinh dien tich thua dat ban dau
mot thua dat hinh tam giacco chieu cao la 10m.Hoi neu keo dai day them 4m thi dien tich se tang them la bao nhieu met vong
mot thua dat hing tam giac co day la 25 , neu keo dai day them 5 m thi dien tich se tang them 50m vuong tinh dien tich thua dat khi chua mo rong
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