What are two reasons why it is important for the planning board of a city to know doubling time?

Two of the reasons why the planning board of a city should know doubling time is:

1) To plan public facilities and utilities : knowing the doubling time helps the planning board anticipate the future demand for public facilities such as schools, hospital and parks. By understanding the rate of population growth, the planning board can ensure that these facilities are provided in a timely manner to accommodate the growing population.

2) Infrastructure planning : Understanding doubling time is crucial infrastructure planning. Cities need adequate transportation networks, water supply, waste management systems and energy infrastructure to support their population growth. By knowing the doubling time, the planning board can develop long term strategies to expand and improve infrastructure, ensuring that the city can continue to function efficiently as it grows.