1 centimeter equals 0.00001 kilometers.
1 centimeter is about the length of your thumbnail.
1 kilometer is about as far as you could run in five or six minutes.
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1cm
.1cm
1 cm = 0.00001 km
1cm2 = 1cm x 1cm 1cm = 10mm 10mm x 10mm = 100mm2 100mm2 equals 1cm2.
1 cm squared is 10mm by 10mm so 1cm squared equals 100mm squared