To convert length x width dimensions from centimeters to meters we should multiply each amount by the conversion factor. One centimeter equals 0.01 meters, in order to convert 21 x 81 cm to meters we have to multiply each amount of centimeters by 0.01 to obtain the length and width in meters. In this case to convert 21 x 81 cm into meters we should multiply the length which is 21 cm by 0.01 and the width which is 81 cm by 0.01. The result is the following:
21 x 81 centimeters = 0.21 x 0.81 meters
The centimeter (symbol: cm) is a unit of length in the metric system. It is also the base unit in the centimeter-gram-second system of units. The centimeter practical unit of length for many everyday measurements. A centimeter is equal to 0.01 (or 1E-2) meter.
The meter (symbol: m) is the fundamental unit of length in the International System of Units (SI). It is defined as "the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second." In 1799, France start using the metric system, and that is the first country using the metric.
To calculate a centimeter value to the corresponding value in meters, just multiply the quantity in centimeters by 0.01 (the conversion factor).
meters = centimeters * 0.01
The factor 0.01 is the result from the division 1 / 100 (meter definition). Therefore, another way would be:
meters = centimeters / 100
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