To determine the length of a string to the nearest centimeter, you would need to measure the string using a ruler or measuring tape. Ensure that the string is stretched out straight and taut for an accurate measurement. Round the measurement to the nearest centimeter based on the closest whole number. If the measurement falls exactly halfway between two whole numbers, round up to the nearest whole number.
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12 cm
It is 57.5 mm.
4.45cm to the nearest cm = 4cm
3.5 rounded to the nearest cm is 4cm
5 cm is already rounded to the nearest 0.1 cm.