.Write a Python program to input radius of circle from user and find diameter, circumference and area of the given circle using function. Circle area: rtr1 Circle Circumference: 2Ttr Circle Diameter: 2r Sample Input: Input radius: 10 Sample Output: Diameter 20 Circumference-62.83 Area = 314.16 you can't use any built-in python function or module. Import math can't be used. Using these pre-defined math functions from the python library will result in zero marks in the answer. You have to do proper mathematical calculations in the coding. Each output should be converted into two decimal points