Please Solve this problem in an easy way using c program not c++

Section 1. Practice Problems: 1. Write a program that will ask for 5 integers and displays the average. Sample Output: Enter first number: 5 Enter second number: 1 Enter third number 3 Enter fourth number: 2 Enter fifth number: 6 The average of the numbers is 3.4. 2. Write a program in C that asks for your weight kilograms and converted to pounds. (1 kilogram = 2.2 pounds) Sample Output: Enter weight in kilograms: 5 Your equivalent weight is 11 pounds. 3. Write a program in C that asks for the radius and height of a cone and determine its volume. Sample Output: Enter radius of cone: 5.5 Enter height of cone: 11 The volume of the cylinder is 1044.835