SMI / Système anglais
1 cm = 0,3937 inch 1 m = 39, 37 inch 1 m = 1,094 inch
1 cm2 = 0,155 inch2 1 m2 = 1,196 yard2
Système Anglais / SMI
1 inch = 2,54 cm 1 foot (= 12 inches) = 30,48 cm 1 yard (=3 feet) = 91, 44 cm
1 inch2 = 6,45 cm2 1 foot2 (=144 inch2) = 929,03,cm2 1 yard2 (=9 feet2) = 0,836 cm2
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