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Volume of a cylinder

Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 107    Accepted Submission(s): 3


Problem Description
One cylinder across another cylinder at right angles, tell the volume of the intersection of the cylinders.
 

Input
Multiple test cases, the number of them T is given in the very first line.
For each test case, two integers r1 and r2, meaning the radius of the two cylinders. ( 1 < r1, r2 < 80 )
 

Output
For each case, output the answer rounded to 2 digits after the decimal point.
 

Sample Input
1 4 4
 

Sample Output
341.33
 

Author
yifenfei
 

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