Câu 2: trang 179 - toán tiếng anh lớp 5A rectangular aquarium has dimensions as shown in the...

Without the necessary information, it is not possible to accurately determine the volume of water needed to fill half of the tank.

In order to solve this problem, the length, width, and height of the rectangular aquarium would need to be given.

The options provided (48l, 70l, 96l, 140l) are arbitrary and cannot be calculated without the actual dimensions of the aquarium.

Without the exact dimensions of the aquarium, it is impossible to determine the amount of water needed to fill half of the tank.

The dimensions of the rectangular aquarium are not provided in the question, so we cannot calculate the exact volume.