xep cac khoi lap phuong nho cach 1 cm thanh mot khoi dang hinh hop chu nhat lon co chieu dài 6cm chieu rong 4cm va chieu cao 3 cm 

a] tinh the tich hinh hop chu  nhat xep duoc

b] tinh so khoi lap phuong nho cung de xep

xep mot khoi lap phuong nho canh 1cm thanh mot khoi dang hinh hop chu nhat lon co chieu dai 6cm ; chieu rong 4cm va chieu cao 3cm.

a)Tinh the tich hinh hop chu nhat xep duoc.

b)Tinh so khoi lap phuong nho dung de xep

Nguoi ta xep 960 khoi hinh lap phuong nho canh 1 cm thanh mot khoi hop chu nhat dai 12 cm; rong 10 cm.Sau do nguoi ta dem son 6 mat ngoai cua khoi hop vua xep duoc.Hoi co bao nhieu khoi hinh lap phuong nho duoc son 1 mat ?

Nguoi ta xep 960 khoi lap phuong nho canh 1 cm thanh mot khoi hop chu nhat dai 12 cm; rong 10 cm.Sau do nguoi ta dem son 6 mat ngoai cua khoi hop vua xep duoc.Hoi co bao nhieu khoi hinh lap phuong nho khong son mat nao ?

co 3 khoi lap phuong nhu nhau canh 8cm

a}   nguoi ta sep thanh 1khoi hop chu nhat .Tinh the tich cua khoi hop chu nhat vua xep duoc

b¦    ban thu da dung day va do duoc duong cheo cua cac khoi lap phuong do ma khong cat tung khoi lap phuong ra .Em co lam duoc nhu ban thu khong? Ve hinh minh hoa

hoi phai dung tat ca bao nhieu khoi lap phuong nho co 1cm  de xep thanh mot khoi hinh hop chu nhat dai 1,6 dm chieu rong 1,4 cm

1 hinh hop chu nhat co chieu dai la 14 cm , chieu rong la10, chieu cao la 10, nguoi ta xep bang cac hinh lap phuong nho canh 1 cm . sau do son 4 mat xung quanh . hoi co bao nhieu khoi lap phuong nho son 1 mat , son 2 mat/

nguoi ta xep 960 khoi lap phuong nho co canh 1 cm thanh 1 khoi hop chu nhat dai 12 cm cr 10 cm sau do nguoi ta dem son 6 mat ngoai cua khoi hop chu nhat . hoi co bao nhieu khoi lap phuong nho ko son mat nao

xếp 6 khoi lap phuong nhua hinh lap phuong canh 3 cm thanh mot hinh hop chu nhat co chieu cao 6cm .Tinh s xung quanh cua hinh hop chu nhat xep duoc do