box% python
Python 3.10.2 (main, Jan 15 2022, 19:56:27) [GCC 11.1.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from scipy.integrate import quad
>>> from numpy import sqrt
>>> quad((lambda x: quad((lambda y: x*y), 0, sqrt(5-x**2))[0]), 1, sqrt(5))[0]
1.9999999999999998
>>>