Please solve these question in details, the answer is in red ink. Please give me the SOLUTIONS.Thanks so much in advance.

14* Find the coordinates of the centroid of the hemispherical region described by 0 E z S 'i64x2y2 (7f) 3*; 5E); (0)0;5) 15*Use spherical coordinates to calculate the moment MFG of the solid occupying the region E described by 0 S 2: 5 'il x2 y2 if the density function is given by 6(x,y,z) = (x2 +y2 + f)\". H. MZ:O :- i\