## Length

Length is the measurement to determine how long or short a thing is.

There are various types of equipment and units to measure length.

Non Standard unit: Non-standard units are the units which are not frequently used as they bound to change from time to time and from person to person. E.g. if we use a hand as a unit to measure the distance then it is bound to change from person to person as the length of a person's hand will be different from another person.

Standard unit: Units which are widely accepted because they remain same over time and from person to person. E.g. centimeter, meter, kilometer inches, foot etc

Conversion table

 100 centimeter 1 meter 1000 meter 1 kilometer 10 centimeter 1 decimeter 1000 millimeter 1 meter 10 millimeter 1 centimeter

Things to remember:

1. Small things are measured in millimeter and centimeters. E.g. length of a pencil will be in centimeters.
2. Length of person is in feets and inches
3. Length of cloth is in meters
4. Length of road is in kilometers and miles