c. 1 liter. b. A millimeter , or millimetre, is a unit of length equal to one thousandth of a meter. 1. It is equal to 1/10,000 th of a square meter, or approximately 0.155 square inches. There are 2.54 centimeters in an inch. It is equal to 100 centimeters, 1/1000th of a kilometer, or about 39.37 inches. It is equal to 0.3048 m, and used in the imperial system of units and United States customary units. A centimeter , or centimetre, is a unit of length equal to one hundredth of a meter. Millimeters, decimeters, centimeters, meters and kilometers are all units of length in the metric system. History/origin: A centimeter is based on the SI unit meter, and as the prefix "centi" indicates, is equal to one hundredth of a meter. There are 2.54 centimeters in an inch. One centimeter is equal to 10 millimeters. A meter , or metre, is the fundamental unit of length in the metric system, from which all other length units are based. There are 2.54 centimeters in an inch. This number system is a bit easier to grasp than inches and feet, where an inch is 1/12th of a foot. Centimeter. 1 milliliter. Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. Because 0.1 centimeter is equals to 1 millimeter and not 10. d. 10 -1 cubic decimeters. It is also the base unit in the centimeter-gram-second system of units. Centimeters : The centimeter (symbol cm) is a unit of length in the metric system. Conversion between square centimeter and centimeter. In the metric system, centi always indicates 1/100th, so a centimeter is 1/100th of a meter. If you do not have a ruler but you need a rough estimate of an object's length in centimeters, you can use any object that is known to have a width that roughly equals one centimeter. It is the size of a square that is one centimeter on a side. => 0.1 cm = 1e-6 km Second choice = 0.001 meters => 0.1 cm = 0.001 meters third choice = 10 millimeters => 0.1 cm = 1 millimeter Fourth choice = 1000 micrometer => 0.1 cm = 1 000 micrometer Thus the not equal that we are looking for is the millimeter. There are 2.54 centimeters in an inch. help, fast! It is subdivided into 12 inches. c. 1 liter. please! A centimetre (international spelling) or centimeter (American spelling) (SI symbol cm) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of 1 / 100. It is equal to 100 centimeters, 1/1000th of a kilometer, or about 39.37 inches. A centimeter, or centimetre, is a unit of length equal to one hundredth of a meter. The easiest objects to use are a standard pencil, pen, or highlighter. Note a few objects that are roughly 1 cm wide. 8.5 cm * 5.5cm or 3 1/3rd" * 2 1/8th". The width of a pencil is close to 1 cm. 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