Area is expressed in the square of the units used for length measurement. Metric units are preferred, but in the United States the Anglo-Saxon units are still widely used.
Metric units:
(1) square micrometer = 10^(-8) square centimeters
(2) square millimeters = 0.01 square centimeters
(3) square centimeters
(4) square meter = 10,000 square centimeters
US (Anglo-Saxon) units:
(1) square inches = 6.4516 square centimeters
(2) square feet = 144 square inches = 929.034 sq cm = 0.0929 square meters
(3) square yards = 9 square feet = 1,296 square inches = 8,361.2736 sq cm
Implementation: Convert input units to square centimeters, then from square centimeters to the output units.
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