using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp1
{
internal class Program
{
static void Main(string[] args)
{
Cau_1();
Cau_2();
Cau_3();
Cau_4();
Cau_5();
}
static void Cau_1()
{
Console.Write("Ban kinh hinh tron la: ");
float r = float.Parse(Console.ReadLine());
float CV = (float)(2*r*Math.PI);
float S = (float)(Math.PI * r * r);
Console.WriteLine("Chu vi hinh tron la {0}\nDien tich hinh tron la {1}",CV,S);
}
static void Cau_2()
{
Console.Write("So ngay di lam: ");
int ngay = int.Parse(Console.ReadLine());
Console.Write("So con cai: ");
int con=int.Parse(Console.ReadLine());
int TLNC = 100000 * ngay;
int PC = 150000 * con;
int BHXH = TLNC * 15/100 ;
int TL = TLNC + PC - BHXH;
Console.WriteLine("Tien luong ngay cong la {0} VND\nTien phu cap la {1} VND", TLNC,
PC);
Console.WriteLine("Dong Bao hiem xa hoi la {0} VND\nTien lanh {1} VND", BHXH, TL);
}
static void Cau_3()
{
Console.Write(" Diem thi mon toan : ");
float Toan = float.Parse(Console.ReadLine());
Console.Write(" Diem thi mon ly : ");
float Ly = float.Parse(Console.ReadLine());
Console.Write(" Diem thi mon hoa : ");
float Hoa = float.Parse(Console.ReadLine());
float TC = (float)(Toan + Ly + Hoa);
float TB = (float)(TC / 3);
