Câu 5:
A high-rise building (starts at the same base height and has 1 unit of floor) is surrounded by streets, the heights of the building is shown in the following chart:
One day, it rains heavily and floods the low area of the property. Since taller buildings surround the lower area, the water cannot be drained out. It just keeps rising up. The image is illustrated below:
Key:
- Blue area represents rainwater.
- Brown columns represent buildings.
Knowing that the outer buildings are located on the edges, which will not be affected by the "water retention" since the water drains down the street.
Thus, the area of building that is flooded with ____ unit(s) of floor.
Câu 6: sẽ có lúc 20:50