Have you ever heard the saying that the tip of the iceberg is only a small part of the iceberg exposed to the water, and most of it is hidden underwater? Suppose 1.
Have you ever heard the expression "the tip of the iceberg"? Only a small part of the iceberg is exposed on the water, and most of it is hidden under the water. Home is a 1 000 cubic meters deep building with an exposed volume of 1 000 cubic meters. The volume of icebergs above the water surface can only be the whole (one tenth), and the underwater volume accounts for nine tenths of the total volume.