Consider a set of points R in the space which is at a distance of 2 units from the line  x1=y−1−1=z+22 between the planes x-y+2z+3=0 and x-y+2z-2=0.

Distance between the planes is h=56Also the figure formed is a cylinder, whose radius is r:2 units. Hence, the volume of the cylinder is  πr2h=π(2)2⋅56=20π6 cubic units. Also the curved surface area is 2πrh=2π(2)⋅56=20π6