The area under curves concept is not only limited to physics and engineering but finds important applications in other fields as well. In economics, it is often used to calculate consumer surplus, which represents the difference between what consumers are willing to pay for a product and what they actually pay. By finding the area under the demand curve up to the actual price, we can estimate the consumer surplus.

Another application of area under curves is found in biology, particularly in estimating population growth. By studying the growth patterns of a certain population over time, we can model the population as a curve. The area under this curve represents the total population size over a specific time interval, providing valuable insights into population dynamics and predicting future growth.

In both economics and biology, the area under curves helps us understand and quantify complex phenomena, enabling us to make informed decisions and predictions.