1. Calculate the flux of the field over the surface of a right circular cylinder of radius R and height h in the first octant, i.e. in the region (x>0, y>0, z>0).

2. Evaluate the surface integral of the vector field over the surface of a unit cube with the origin being at one of the corners.

3. Calculate the flux of over the surface of a sphere of radius R with its centre at the origin.

4.Calculate the flux of through the surface defined by a cone and the plane

5. Evaluate the flux through an open cone with for the field .