What Is the Flux of the Vector Field $\overrightarrow { \vec { F } } = - 5 \vec { i } + 6 \vec { j } + 2 \vec { k }$

Essay

What is the flux of the vector field $\overrightarrow { \vec { F } } = - 5 \vec { i } + 6 \vec { j } + 2 \vec { k }$ through a circle in the xy-plane of radius 2 oriented upward with center at the origin?