Problems
The surface area of the pyramid 3
The surface area of the pyramid 3
Find the right lateral surface area of a quadrilateral pyramid with volume $V$ and the height $h$.
\InputFile
In a single line through the space volume of the pyramid and the height. All input data are integers, not exceeding $30000$.
\OutputFile
The search area, the result is to bring up to a tenth.
Input example #1
300 10
Output example #1
210.0