Mot hinh thang co so do canh day be la 4,5m va bang 60% day lon. Neu giam canh day lon di 1,6m thi dien tich hinh thang giam di 5,4m2. Tinh dien tich hinh thang do
1 hinh thang co so do canh day be la 4,5m va = 60% day lon . neu giam canh day lon 1,6m thi dien tich hinh thang giam di 5,4 . tinh dien tich hinh thang do
1 cua hang da mua vao 75.000 dong 1 hop keo . cua hang da ban ra va laI duoc 24% gia von cua moi hop keo . hoi cua hang do da ban...tien 1 hop keo
ai nhanh minh LIKE cho
mot hinh thang co so do canh day be la 4.5mva bang 60%day lon.Neu giam canh day lon di 1.6m thi dien tich hinh thang giam 5.4m2.tinh dien tich hinh thang do
mot thua ruong hinh thang cô S la 500m2.ti so giua day nho va day lon la 2/5.neu giam day nho di 3m thi S giam di 21m2.tinh do dai moi day cua hinh thang ban dau
mot hinh thang co day lon la 40cm. canh day be bang 60%canh day lon. biet dien tich hinh thang bang 0.272m2. do dai duong cao cua hinh thang do la
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 hinh thang co day lon gap 4 lan day be chieu cao la 10.2 m tinh s biet neu cung them vao day lon va day be 20 m thi duoc hinh thang moi co day lon gap 2 lan day be
minh can giai nhung bai sau
cau 1: hieu 2 so la 65.68.neu them vao so lon 49.5 va them vao so be 7.452 thi hieu 2 so luc sau la...............................
cau 2: duong tu nha Mai toi truong dai 2041m. Mai di hoc bang xe dap va ban kinh moi banh xe dap la 32.5dm.De toi truong thi moi banh xe dap cua Mai can phai quay....................vong
cau 3: cho hinh thang vuong ABCD [ vuong o A va D] co canh day be la AB va canh day lon la DC. Tu B ha duong cao BH vuong goc voi canh day lon DC. Tinh dien tich hinh thang ABCD biet canh AB dai 32cm , canh AD dai 0.3m va canh HC dai 2dm
vay dien tich hinh thang ABCD la....................................................m2
cau 4: Mot khu dat hinh thang co dien tich la 1197m.tinh do dai moi canh day biet chieu cao cua khu dat la 315m va canh day be bang 40% tong do dai 2 canh
do dai canh day be la.............................m
do dai canh day lon la................................m
Hinh thang co tong 2 day la 9.5m.neu giam canh day lon di 1.6m thi dien tich giam 1.84m.tinh dien tich hinh thang do