Find the area of the surface consisting of the part of the sphere of radius 2 centered at origin that lies above the horizontal plane z = 1. (Equation of this sphere is given by x^2 + y^2 + z^2 = 2^2 .) x^2+y^2+1=4 x^2+y^2=3 This is the base of the solid. But how do we find the required surface area of the sphere? How do we use line integral to determine this area? It's not an area that is parallel to the z-axis.