Question: Write a program that will call a function to calculate the area of a circle, and call another function to calculate the circumference of a

Write a program that will call a function to calculate the area of a circle, and call another function to calculate the circumference of a circle. The main function should prompt the user for the radius, and print out the area and circumference after they have been calculated by the called function. The program should have a While or Do While Loop that keeps prompting the user for the Radius, till the user enters a Sentinel of-1 DO NOT USE GLOBAL VARIABLES in the program. PI should be declared as a global constant with a value of 3.14. Sample Run1: 7, 100, 50,-1 Sample Run2: 2,4, 6, 8, 10,-1
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