How to solve pls show figure of plane formed

Take idea from this graph.

there is a some mistake in the question because using this I don't get 132..

Let \vec F = 2y\hat i - z\hat j + x^2\hat k, and let S be the part of the parabolic cylinder y^2 = 8x, which is in the first octant (i. e. x, y, z \geq 0) and is bounded by planes ...