What represents one half of a meter?

50 centimeters or 500 millimeters or 1.64 feet

1/2 meter:

= 1/2 m * 100 cm/1 m = 50 cm

=

1/2m*1000 m/1m = 500 mm

=

1/2m*3.28 ft/1m = 1.64 ft