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xep 2197 khoi lap phuong be co canh 1 cm xep thanh 1 hinh lap phuong lon hoi canh cua no 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?
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Mot hinh lap phuong co canh la 7cm. vay the tich cua hinh lap phuong la:
ti so the tich giua hinh lap phuong be va the tich hinh lap phuong lon la 8:27. vay ti so phan tram giua canh hinh lap phuong be labao nhieu
1 hinh hop chu nhat co chieu dai la 7 cm chieu rong 5cm chieu cao la 6 cm.1 hinh lap phuong co the tich hon the tich cua hinh hop chu nhat do la 6 cm3 .tinh dien tich xung quanh dien tich toan phan cua hinh lap phuong do
mot hinh lap phuong co canh là 7 cm . khi do the tich cua hinh lap phuong do la ......cm3
mot hinh lap co canh la 7cm. Khi do the tich cua hinh lap phuong do la
ta xep 2197 khoi hlp nho canh 1cm thanh 1 khoi hinh lap phuong moi lon hon. hoi hnh lap phuong lon dai bao nhieu cm