A hotel, with a land area of 45 mu and a building area of 6.5438+0.4 million square meters, what is its floor area ratio? How many floors are there?

Floor area ratio =140000/666.667 * 45 =140000/30000 = 4.667. The plot ratio standard for multi-storey buildings is 3, and that for high-rise buildings is 5. The plot ratio is fixed. The higher the plot ratio, the smaller the density between buildings. The plot ratio is 4.667. If the building density is low (with large open space), it may be necessary to build 18 floors.