fn main() {
let r:f32 = 5.0; // radius
let h:f32 = 13.0; // height
let pi:f32 = std::f32::consts::PI;
let surface_area:f32 = pi * r * (r + ((h * h) + (r * r)).sqrt());
println!("Surface Area of Cone = {}", surface_area);
}
/*
run:
Surface Area of Cone = 297.32645
*/