What units in the metric system would you use to measure each of the following

Question

quantities?
(a) Distance from Los Angeles to New York
(b) Your waist measurement
(c) Width of a hair
(d) Your height

Answer 1

km
cm
mm
cm

Answer 2

a) km
b) cm
c) mm
d) cm or possible in m with 2 decimals, eg. 175 cm or 1.75 m