Firstly we need to convert inches to feet.
Since, 1 Foot = 12 inches
all the dimensions of the shoebox in feet are:
Length: 12 inches / 12 = 1 foot
Width: 8 inches / 12 = 0.6667 feet
Height: 6 inches / 12 = 0.5 feet
volume of cuboid = l*b*h
(here cuboid is shoes box)
1 ft x 0.6667 ft x 0.5 ft = 0.3333 cubic feet
Therefore, the shoebox has a volume of 0.3333 cubic feet.