A console application for calculating a circles' area.
Write a program that prompts the user for the radius of a circle. Calculate the area of the user’s circle and print the result.
Using the same radius, calculate the circumference (2pir) and diameter of the circle (2*r). Output the results.
Ask the user for the miles per gallon of their car. If the radius that they entered is in miles, output how many gallons of gas they will use to go around this circle.