co phai la
1/2=5 cm
The h moi vien gach la : 30 x 20 x 5 x 24 = 7200
Doi 1/2cm = 5cm
The h moi thung gach la
30 x 20 x 5 x 24 = 7200(cm3)
Moi vien gach lat nen co chieu dai 30cm ,chieu rong 20cm ,chieu cao 1/2cm.moi thung gach co 24 vien nhu the .tinh the tich cua moi thung gach,coi do day cua vo thung chua la khong dang ke
mot be ca hinh hop chu nhat co dai 30cm, rong 20cm va cao 1/2cm.Biet moi thung gach co 24 vien nhu the .Tinh the tich moi thung gach do
mot nen nha hinh chu nhat co chieu dai 9m, chieu rong bang 2/3 chieu dai. nguoi ta lat nen nha bang cac vien gach hinh vuong canh 3 dm. moi vien gach gia 12000 dong. tinh so tien mua gach de lat ca nen nha do. [dien tich phan gach vua ko dang ke].
Mot nen nha hinh hop chu nhat co chieu dai 9m chieu rong bang 2/3 chieu dai . Nguoi ta lat nen nha bang cac vien gach hinh vuong canh 3dm. Moi vien gach gia 12000 dong . Tinh so tien mua gach de lat ca nen nha do
Nen mot canphong hinh chu nhat co chu vi 32m chieu dai gap 3lan chieu rong
a/dien tich nen can phong nay.
b nguoi ta dung gach hinh vuong 40 cm de lat nen can phong nay .hoi phai mua it nhat bao nhieu thng gach,biet moi thung co 25 vien gach?
mot can phong hinh chu nhat co chieu dai 9m, chieu rong bang 3/5 chieu dai . nguoi ta dung nhung vien gach hinh vuongco canh 30cm de lat nen can phong do , moi vien gach con gia 45000 dong va tien cong de lat nen la 30000 dong /m vuong . hoi tien mua gach va cong lat nen cua can phong do la bao nhieu dong ?
1 vien gach hinh hop chu nhat co chieu dai bang chieu cao va chieu dai gap doi chieu rong . Tinh the tich cua vien biet tong chieu dai va chieu rong cua vien gach la 33cm
1 nen nha hinh chu nhat co chieu dai 9mieu rong bang 2/3 chieu dai nguoi ta lat nen bang cac vien gach hinh vuong canh 3dm moi vien gach gia 12000 dong tinh so tien mua gach de lat ca nen nha do ( dien tich phan mach vua ko dang ke )
mot nen nha hinh chu nhat co chieu dai 9m chieu rong bang 2/3 chieu dai .nguoi ta lat nen nha bang cac vien gach hinh vuong canh 3dm moi vien ganh chi gia 12 000 dong.tinh so tien mua gach de lat ca nen nha do (dien tinh phan manh vua ko dang ke )
