Question

How to calculate the area, diameter, and circumference of a circle in Rust

Answer 1

use std::f64::consts::PI;

fn main() {
    let radius = 3.0;
    
    let area = PI * radius * radius;
    println!("Area = {:.2}", area);
    
    let diameter = 2.0 * radius;
    println!("Diameter = {:.2}", diameter);
    
    let circumference = 2.0 * PI * radius;
    println!("Circumference = {:.2}", circumference);
}


  
/*
run:

Area = 28.27
Diameter = 6.00
Circumference = 18.85
  
*/

 

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