Tess builds a sandbox in the shape of a regular hexagon in which all the sides are 40 inches long. She then takes a photo of the sandbox and prints the photo. In the photo, the sides of the hexagon are each 4 inches long. Identity the scale factor that was used to create the printed photo of the sandbox. Express your answer as a decimal.

A regular hexagon has six equal sides. The ratio of the side lengths of the actual sandbox to the printed photo is $40\text{ in.}/4\text{ in.} = \boxed{10}$.