Please answer every part of the question with detailed explanation so I can understand.
1. Let S be the portion of the sphere 2 + y2 + z2 = 9 where 1 z? + y2-4 and z > O. Use spherical coordinates to find a parametrization of S and use it to compute: (a) the area of S (b) Js 2-ds [5+5=10pts]