Geometry
posted by Dee on .
An unsharpened pencil is in the shape of a hexagonal prism, in which the face edge is 4 millimeters and the length is 170 millimeters. What is the lateral area of the pencil?

So you have 6 identical long skinny rectangles
each one is 4 by 170 mm^2 = 680 mm^2
multiply by 6