Need help with Calculus 3 problems contact me if you can help here is a sample problem.   S is part of...

Need help with Calculus 3 problems contact me if you can help here is a sample problem.

S is part of the sphere

x^2+y^2+z^2 =4 that lies inside of  x^2+y^2 and above z=0

find ∫ ∫x x^2dS