



 
One square centimeter is literally a square with side lengths of 1 centimeter: One centimeter is equal to 10 millimeters, therefore this square also has a length of 10 mm on each side: If you divided each side into millimeter long segments, you would see that one square centimeter is equal to 100 square millimeters (100 squares with side lengths of 1 mm). Or simply, \[1 cm^2 = 1 cm \times 1 cm = 10 mm \times 10 mm = 100 mm^2\] To convert from square millimeters to square centimeters, you simply divide by 100. For example, \[1670 mm^2 = 16.70 cm^2 .\] Tyler  


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