the solid of revolution formed by the function f(x)=x2+2x rotated about the line g(x)=x fo roximate the volume of the solid by slicing the solid perpendicular to g(x) into n pieces with unifor mann sum that approximates the volume of the solid of revolution. Be explicit about how you do tl you introduce. the solid of revolution formed by the function f(x)=x2+2x rotated about the line g(x)=x fo roximate the volume of the solid by slicing the solid perpendicular to g(x) into n pieces with unifor mann sum that approximates the volume of the solid of revolution. Be explicit about how you do tl you introduce