Question 3. Sketch the given solid, and describe it as a region in spherical coordinates. i)x^(2)+y^(2)+z^(2)=1&x^(2)+y^(2)+z^(2)=4, and where y =0. ii)z=sqrt(3x^(2)+3y^(2))&sqrt(3)z=sqrt(x^(2)+y^(2)), and inside the sphere

Question 3. Sketch the given solid, and describe it as a region in spherical coordinates. i)x^(2)+y^(2)+z^(2)=1&x^(2)+y^(2)+z^(2)=4, and where y<=0&z>=0. ii)z=\sqrt(3x^(2)+3y^(2))&\sqrt(3)z=\sqrt(x^(2)+y^(2)), and inside the sphere x^(2)+y^(2)+z^(2)=1. iii)z=-\sqrt(x^(2)+y^(2)) and the xy-plane, and inside the cylinder x^(2)+y^(2)=4.