Problem 133. Volume of this donut

I think the input are the radii, not the diameters, but I'm too lazy to check for sure.

not really, the test sequence is simply wrong.

I spend 20mn to understand that the data are inverted, thanks :|

and also five minus it is not diameter but radii, a is outer radii and b the radii of the hole

It should be specified more clear what the input parameters mean exactly geometrically.

What a waste! Calling a radius a diameter. I got numbers that were off by a factor of 8, which turned out to be that I had used the information that a and b were diameters, whereas Bistwas used them as radii. Please correct the problem definition.

If a is the hole diameter and b is the outermost diameter, how can a>b in the test cases?