Description : How can you compare lengths within the customary system or the metric system?
Last Answer : There are conversion factors. Within the customary system, with common units, you use12 inches (in) = 1 foot (ft)36 in = 3 ft = 1 yard (yd)792 in = 66 ft = 22 yds = 1 ... to-next unit conversion often requires yet another conversion factor. In the metric system, the conversion factor is 1,000.