hai be hinh hop chu nhat co cung chieu cao la 1m. day be thu nhat co chieu dai gap doi chieu rong . day be thu 2 co chu vi lon hon be day be thu nhat 36 dm va chieu rong bang chieu rong day be thu nhat.tinh the tich moi be biet rang the tich cua be thu 2 lon hon the tich cua be thu nhat 5.76m3.
giai chi tiet. mk se tick cho 5 nguoi co cau tra loi dung nhat va nhanh nhat.