co 27 khoi lap phuong nho bang nhau duoc ghep thanh mot hinh lap phuong lon . nguoi ta son tat ca cac mat cua hinh lap phuong lon do .

a] co.... khoi hinh lap phuong nho duoc son 3 mat .

b]co...khoi lap phuong nho duoc son 2 mat .

c]co .... khoi lap phuong nho duoc sin 1 mat.

d]co ... khoi lap phuong nho khong duoc son mat nao .

  GHI CA CACH GIAI NUA NHA . LAM ON , HELP ME 

nguoi ta xep nhung hinh lap phuong nho canh 1cm thanh 1 hinh lap phuong lon canh dai 11dm ,sau do nguoi ta son 3 mat ngoai cua hinh lap phuong lon vua xep duoc .Hoi co bao nhieu hinh lap phuong nho duoc son 1mat, 2 mat ,3 mat  khong son mat nao

nguoi ta xep cac hinh lap phuong nho co canh 1cm thanh mot khoi hinh lap phuong lon co canh 12 cm.Sau do nguoi ta son toan bo 6 mat cua khoi hinh lap phuong lon . Hoi :

a)co bao nheu hinh duoc son 3 mat

b)co bao nhieu hinh duoc son 2 mat ? 

c)co bao nhieu hinh duoc son 1 mat?

d)co bao nhieu hinh khong duoc son mat nao

Nguoi ta xep nhung hinh lap phuong nho canh 1cm thanh 1 hinh lap phuong lon canh 12cm, sau do nguoi ta son 4 mat mat quanh va day tren cua hinh lap phuong vua xep duoc. Hoi co bao nhieu hinh lap phuong nho duoc son 2 mat

nguoi ta xep hinh lap phuong nho 1 cm  thanh moi hinh lap phuong lon  canh dai 9cm sau do nguoi ta son cac mat ngoai cua hinh lap phuong lon vua xep duoc hoi co bao nhieu hinh lap phuong nho duoc son mot mat

nguoi ta xep nhung hinh lap phuong nho canh 1cm thanh mot hinh lap phuong lon canh 1.5dm, sau do nguoi ta son cac mat ngoaicua hinh lap phuong lon vua xep duoc. hoi co bao nhieu hinh lap phuong nho duoc son hai mat?

nguoi ta xep 4 hinh lap phuong nho co canh 4cm thanh 1 hinh lap phuong lon roi son tat ca cac mat cua hinh lap phuong hoi moi hinh lap phuong nho co may mat duoc son va dien tich son cua moi hinh lap phuong nho la bao nhieu

nguoi ta xep cac hinh lap phuong canh 1cm thanh 1 hinh lap phuong lon co dien tich toan phan la 600cm2. Sau do nguoi ta son tat ca cac mat cua khoi lon do. Hoi

a/ Co bao nhieu hinh lap phuong nho da dung de xep thanh hinh lap phuong lon?

b/ co bao nhieu hinh lap phuong nho chi duoc son dung 1 mat?

nguoi ta xepp cac  hinh lap phuong nho nhu nhau thanh mot hinh lap phuong lon roi son tat ca cac mat cua hinh lap phuong do.Hoi co bao nhieu hinh lap phuong nho duoc son thanh 2 mat