# Units of Length

Units of length plays a major role in math.Units of length are mostly used in the topic mensuration,geometry,areas,volumes etc....We have given a conversion table and also chart for understanding the concept in easy way.Before them we have to keep a important point in our memory.Let us consider a example convert 20 mm to cm.The answer is 2 cm.Here we are converting mm to cm from smaller into larger so we have to divide it by 10 (because 10 mm = 1 cm). From this example we may decide for converting a smaller to larger unit we have to divide. If we want to convert a larger unit to smaller we have to do the reverse process that is we have to multiply. We are using the units for length in the below situation

## Units of length in real life

1.The thickness of the rubber sheet for a table tennis bat in millimeters.
2.width of a window in centimeters.
3.width of a road in meters.
4.distance between two places in kilometers.

Tools for taking measurement: Plan Scale,Measuring Tape,Straight Ruler,Micrometer,Electronic Linear Scale

## Units Used to Measure Length

 10 millimeters(mm) = 1 Centimeter 10 Centimeters (cm) = 1 Decimeter 10 Decimeters (dm) = 1 meter 10 meters (m) = 1 Hectometer 10 Hectometers = 1 Kilometer 100 Centimeters = 1 meter 1000 meters = 1 Kilometer 1 Micron = 10-6 meter 1 Nano meter = 10-9 meter 1 Angstrom = 10-10 meter 1 Femi = 10-15 meter 1 light year = 9.4605 x 1015 meters

I Units of length plays a major role in math.Units of length are mostly used in the topic mensuration,geometry,areas,volumes etc....We have given a conversion table and also chart for understanding the concept in easy way.Before them we have to keep a important point in our memory.Let us consider a example convert 20 mm to cm.The answer is 2 cm.Here we are converting mm to cm from smaller into larger so we have to divide it by 10 (because 10 mm = 1 cm). From this example we may decide for converting a smaller to larger unit we have to divide. If we want to convert a larger unit to smaller we have to do the reverse process that is we have to multiply. We are using the units for length in the below situation

1.The thickness of the rubber sheet for a table tennis bat in millimeters.
2.width of a window in centimeters.
3.width of a road in meters.
4.distance between two places in kilometers.

Tools for taking measurement: Plan Scale,Measuring Tape,Straight Ruler,Micrometer,Electronic Linear Scale
UNITS USED TO MEASURE LENGTH
10 millimeters(mm) = 1 Centimeter
10 Centimeters (cm) = 1 Decimeter
10 Decimeters (dm) = 1 meter
10 meters (m) = 1 Hectometer
10 Hectometers = 1 Kilometer
100 Centimeters = 1 meter
1000 meters = 1 Kilometer
1 Micron = 10-6 meter
1 Nano meter = 10-9 meter
1 Angstrom = 10-10 meter
1 Femi = 10-15 meter
1 light year = 9.4605 x 1015 meters

I n the topic units of length we have seen the conversion table and some of the shortcuts of converting one units to another unit.Now we are going to discuss about units of area.In this topic units of area we have given conversion table. Area is nothing but the quantity which exposes the extension of two dimensional surfaces.This is one of the most important sub topics of measurement.Let us consider practical example.If we want to make white wash for a wall which measures 15 m length and 10 m breadth and we are given the cost of painting per square meter, for finding the total cost required to paint the entire wall we need to find the area of the given shape (rectangle) and we need to multiply the area with the cost given per unit.For this kind of purpose we are finding area of the shape.Here we have some given some more examples and we have also given the conversion table. Real life applications:

These are the following practical applications of this topic:

By using the concept of this topic, we can find

1. Wood required to make a table.
2. Land required to construct a building as we like.
3. Space required to accommodate for certain number of people.
4. Space required to keep ten boxes, if one box occupies 10 square inches.

UNITS OF AREA
100 square millimeters (mm2) = 1 square centimeter
100 square centimeters (cm2) = 1 square decimeter
100 square decimeters (dm2) = 1 square meter
100 square meters (m2) = 1 square decameter
100 square decametres (dam2) = 1 square hectometer
100 square hectometers (hm2) = 1 square kilometer
1 square kilometers (km2) = 10,00,000 square meters
100 square meters (m2) = 1 are
100 ares = 1 hectare
1 hectare = 10,000 square meters

so far you have seen the conversion table for units of area.

Related topics

• Metric System
• units of time
• units of volume
• units of weight
• Cubic units
• imperial units

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