Using the scale 1 centimeter = 2 inches, find the real length and width of the bag.
If the bag measures 5 cm by 8 cm on a 1:2 scale, the real length and width of the bag would be:
Length: 5 cm x 2 inches/cm = 10 inches
Width: 8 cm x 2 inches/cm = 16 inches
Therefore, the real length of the bag is 10 inches and the real width is 16 inches.