chu tho ton cat cac tam ton hinh chu nhat co kich thuoc 2,4m x 0,9m thanh cac manh ton hinh chu nhat co kich thuoc 0,6m x 0,3m de go thanh cac hop dung phu tung xe may.
a. Em chi giup chu cach cat nhu the nao de tiet kiem nhat nhe . (ko phai bo di mien ton nho nao )
b. Neu moi hop can 5 manh ton thi can cat bao nhieu tam ton de go 120 hop dung phu tung ?
Ban nao lam duoc minh tick cho
chu tho can cat cac tam ton hinh chu nhat co kich thuoc 2,4m nhan 0,9m thanh cac manh ton hinh chu nhat co kich thuoc 0.6m nhan 0.3m de go thanh cac hop dung phu tung xe may a
a em chi giup chu cach cat nhu the nao de tiet kuem nhat nhe [khong phai bo di mieng ton nao ]
b neu moi hop can 5 manh ton thi can cat bao nhieu tam ton de du go 120 hop dung phu tung /
1 nguoi tho tho han 1 ong ton hinh chu nhat dai 60 cm rong 40 cm de go thanh 1 cai hop khong co nap . ong cat 4 goc cua mieng ton thanh 4 hing vuong = nhau , co chu vi 48cm . tinh the tich hop?
Hai mieng ton hinh vuong bang nhau deu co canh 1,5 m.Mieng ton thu nhat duoc cat thanh 4 hinh vuong o 4 goc de co canh 0,15 m.Mieng ton thu hai duoc cat thanh 4 hinh vuonh o 4 goc deu co canh 0,5m.Tu phan con lai cua mi mieng ton nguoi ta tao ra mot hinh hop chu nhat va mot hinh lap phuong deu ko co nap.
Tinh s 5 mat cua moi hinh.
Giup mk nha
mk se tick
mot to tho duoc giao nghiem vu lam 100 cai thung bang ton hinh hop chu nhat co nap. Moi thung co chieu dai 2,4m, chieu rong 1,8m va chieu cao 1,2m. Hoi can bao nhieu met vuong ton de lam so thung do ? Biet rang dien tich cac mep han khong dang ke
mot khoi go hinh hop chu nhat co kich thuoc dai:40m r:30m c:20m duoc son 4 mat nhung khong ro mat nao nay nguoi ta dem cat thanh cac khoi go hnh hop chu nhat co kich thich dai;4cm rong ;3cm cao ;2cm
a) cat duoc duoc bao nhieu khoi nho
b) co bao nhieu khoi duoc son 3 mat 2mat 1mat va khong son mat nao
Mot mieng ton hinh chu nhat co chieu dai 60cm chieu rong bang 2/3 chieu dai nguoi tho cat bo 4 hinh vuong bang nhau o 4 goc moi hinh vuong co canh 5cm Sau do nguoi tho gap Phan con lai thang 1 cai hop ko co nap Tinh kich thuoc cua cai hop
dien tich cua tung mat cua hop do
mot khuc go hinh hop chu nhat dai 3 dm rong 2,5 dm cao 2 dm duoc son ca 6 mat va dem cat thanh cac khoi hop chu nhat nho dai 3 cm rong 2,5 cm cao 2 cm lam do choi cho tre em hoi :
a)cat duoc bao nhieu khoi hop chu nhat nho do (mach cat ko dang ke)
b) nhung khoi hop chu nhat nho nam o vi tri nao cua khoi go khoi hop lon thi duoc son3 mat 2 mat 1 mat va ko duoc son mat nao? moi loai trenmoi loai tren co bao nhieu khoi nho?
giup mk nhe .Mot thung ton ko co nap co dang hinh hop chu nhat co chieu dai 4.5m,chieu rong 4m va chieu cao la 3.5m.Hoi can bao nhieu met vuong de lam du cai thung ton do??????
nguoi ta dung ton lam cai thung hinh hop chu nhat khong nap co chieu dai 1,5m , chieu rong 0,6m va chieu cao 8dm . Tinh dien tich ton can dung de lam thung .
