Question

four sub multiple units of length

Answer 1

units of length
kilometers
metres
miles
yards

Answer 2

the SI Unit of length is meter .when a larger distance is to be covered we cannot use meter.So, to covered a larger distance we use km , hm, and dac. These are called multiples of meter. when the distance is smaller we use Dm, cm , and mm . These are called sub multiples of meter.