rust value of pi

The value of pi in Rust can be obtained by using the std::f64::consts::PI constant. This constant is defined in the Rust standard library and represents the mathematical constant pi (π) with a precision of 64 bits. Here's an example of how you can use it in Rust:

fn main() {
    let pi: f64 = std::f64::consts::PI;
    println!("The value of pi is: {}", pi);
}

This code will output the value of pi as 3.141592653589793.