A.1-3. Length

1 in. = 2.540 cm

100 cm = 1 m (meter)

1 micron = 106 m = 104 cm = 103 mm = 1 μm (micrometer)

1 Å (angstrom) = 1010 m = 104 μm

1 mile = 5280 ft

1 m = 3.2808 ft = 39.37 in.

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