Time Limit: 1 sec
Suppose you have three Circles. First Radius will be given. Second Radius is half of first one and third one is half of second one.
Your task is to tell the total Area if we add all the three Areas.
Input file contains a series of line. Each line contains a single integer number, the Radius of first Circle, R (R<100). Input is terminated by EOF
For each line of input print the total Area of three Circles rounded to 2 decimal points in a separate line.
Problem Setter: Samia Safa Ahmed