Please use C

Pencil Case Bibi wants to make a cylinder pencil case with R cm radius and H cm height. Help her calculate the pencil cases surface area using exactly equals to 3.14. Format Input The first line of the input contains an integer T , the number of test case. The next T line contains an integer R and H. Format Output For each test case, print Case #X: Y with X is the number of test case and Y is the pencil cases surface area with 2 digits after comma. Constraints 1 T 103 1 R 100 1 H 100 Sample Input (standard input) 3 4 5 100 9 23 4 Sample Output (standard output) Case #1: 226.08 Case #2: 68452.00 Case #3: 3899.88