What is the value of Pi (π)?

The value of Pi (π) is a mathematical constant that represents the ratio of a circle's circumference to its diameter. While there are several approximations used for practical purposes, the most common decimal representation of Pi is 3.14159. Among the options provided, 3.1416 is the closest approximation to the true value of Pi when rounding to four decimal places. This makes it the most accurate choice among the available answers.

Other values, such as 3.1415, 3.142, and 3.140, either round down or do not provide as precise an approximation of Pi as 3.1416. Understanding Pi's value is essential in various fields, including mathematics, engineering, and physics, particularly when performing calculations involving circles and circular shapes.