20 dm to cm - How long is 20 decimeters in centimeters? [CONVERT] ✔

20 decimeters is equivalent to 200 centimeters.

We know (by definition) that: 1 dm = 10 cm

We can set up a proportion to solve for the number of centimeters.

1   dm 20   dm = 10   cm x   cm

Now, we cross multiply to solve for our unknown x:

x   cm = 20   dm 1   dm * 10   cm → x   cm = 200   cm

Conclusion: 20   dm = 200   cm

The inverse of the conversion factor is that 1 centimeter is equal to 0.005 times 20 decimeters.

It can also be expressed as: 20 decimeters is equal to 1 0.005 centimeters.

Approximation

An approximate numerical result would be: twenty decimeters is about two hundred centimeters, or alternatively, a centimeter is about zero point zero one times twenty decimeters.

Units involved

This is how the units in this conversion are defined:

Decimeters

The decimetre (British English) or decimeter (American English) is a unit of length in the metric system, equal to one tenth of a meter (the International System of Units base unit of length), ten centimetres or 1/0.254 (approximately 3.93700787) inches.

Centimeters

A centimetre (symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of1⁄100.

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.

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