Hi, I'm having a little trouble to solve these problems. May anyone help me please?

What is the area of the spherical surface X^2+Y^2+Z^2=9 inside the cylinder

X^2+Y^2=3x ?

What is the area of the spherical surface X^2+Y^2+Z^2=9 inside the cylindrical X^2+Y^2=4 ?

What is the area of the spherical surface X^2+Y^2+Z^2=16 inside the cylindrical Y^2+Z^2=4Z ?

Thanks, and sorry for my English because it is not my native language