fn capsule_volume(r: f64, h: f64) -> f64 {
let pi = std::f64::consts::PI;
pi * r * r * h + (4.0 / 3.0) * pi * r * r * r
}
fn main() {
let r = 6.0;
let h = 11.0;
let volume = capsule_volume(r, h);
println!("Capsule volume = {:.2}", volume);
}
/*
run:
Capsule volume = 2148.85
*/