$(4)$ Let $C$ be the closed simple oriented curve consisting of the line segment from $(1,0,0)$ to $(0,2,0),$ followed by the line segment from $(0,2,0)$ to $(0,0,4),$ and finished by line segment from $(0,0,4)$ to $(1,0,0).$ Evaluate $o{\displaystyle \underset{C}{\overset{\phantom{}}{}}}($:$x^2-2y+z,2x-z,y-x+z^2$:$)*dvec(r).$ Round to the nearest tenth.