Please use C.

Write a program that asks the user for the radius of a circle and then computers the area of that circle (A) using the formula A = ar2 Where it is approximately 3.14159. Note that there is no "raise to a power" operator in C. Given the arithmetic operators you know Chas, how can you write an expression that achieves the desired result? Write a program that reads in a temperature in degrees Fahrenheit and returns the corresponding temperature in degrees Celsius. The conversion formula is C= 5 32) The following is a sample run of the program: Program to convert Fahrenheit to celsius. Fahrenheit temperature? 212 Celsius equivalent 100 If you write this program carelessly, the answer always comes out 0. What bug causes this behavior