Các câu hỏi tương tự
Nhân dip sinh nhat huong va lan du dinh lam mot chiec hop qua hinh hop chu nhat co the tich la12dm3.tuy nhien sau khi tinh toan thay chiec hop du dinh lam khonh dung duc mon qua da chuan bi nen lan da tang chieu dai va chieu cao cua chiec hop len gap 2 lan.tinh the tich chiec hop lan da lam
bai 1 . nguoi ta tha 2 hon da co the tich nhu nhau vao mot be nuoc lam nuoc trong be dang them 1,2 dm . biet chieu dai be la 60 cm , chieu rong cua be la 35 cm , hay tinh the tich moi hon da .
bai 2 . hai chiec hop co the tich la 345 cm khoi . the tich hop thu nhat lon hon the tich hop thu hai 25 cm khoi . tinh the tich moi hop.
bai 3 . mot hinh lap phuong co the tich 64 dm khoi . tinh dien tich toan phan cua hinh lap phuong do .
bai 1 . nguoi ta tha 2 hon da co the tich nhu nhau vao mot be nuoc lam nuoc trong be dang them 1,2 dm . biet chieu dai be la 60 cm , chieu rong cua be la 35 cm , hay tinh the tich moi hon da .
bai 2 . hai chiec hop co the tich la 345 cm khoi . the tich hop thu nhat lon hon the tich hop thu hai 25 cm khoi . tinh the tich moi hop.
bai 3 . mot hinh lap phuong co the tich 64 dm khoi . tinh dien tich toan phan cua hinh lap phuong do .
mot thung dang hinh hop chu nhat khong nap co co chieu dai,chieu rong va chieu cao lan luot la 5dm;4dm;3dm.Tinh dien tich ton dung de lam chiec thung do.[phan mep ham khong dang ke]
de dan mot cai hop bang bia khong co nap dang hinh hop chu nhat co chieudai 80cm , chieu rong 5dm va chieu cao 3dm. tinh dien tich bia de lam chiec hop do (khong tinh mep ban)
mot thung dang hinh hop chu nhat khong nap co chieu dai , chieu rong va chieu cao lan luot la5dm,4dm,3dm.tinh dien tich ton de lam chiec thung do.(phan mep han khong dang ke)
giai ro ra cho mk nhe
ai dung va nhanh nhat thi mik tick nha
mot be ca co dang hinh hop chu nhat lam bang kinh ( khong co nap ) co chieu dai 90cm, chieu rong 65cm, chieu cao 55cm. muc nuoc ban dau trong be la 40cm.
a. tinh dien tich kinh dung lam be ca do.
b.nguoi ta cho vao be mot hon da. luc nay muc nuoc do duoc la 45cm. tinh the tich cua hon da.
Mot hinh hop chu nhat co dien tich xung quanh la 120cm2, chieu dai gap doi chieu rong, chieu cao la 4cm. Nguoi ta son mat trong cua chiec hop khong co nap.Tinh dien tich can son
de lam 1 chiec thung hang khong lap dang hinh hop chu nhat co chieu dai 1.5m chieu rong 0.8m chieu cao 0.7m nguoi ta dung 1 tam ton co dien tich 6m2 hoi sau khi lam song thung hang thi thua re duoc may met vuong ton dien tich mep go khong dang ke.