# “The Knowledge Library”

#### Knowledge for All, without Barriers…

##### An Initiative by: Kausik Chakraborty.
15/04/2024 1:42 AM

# “The Knowledge Library”

Knowledge for All, without Barriers…

# “The Knowledge Library”

Knowledge for All, without Barriers……….

# The Knowledge Library

### Measurements

 Term Symbol Value yotta Y 1024 zetta Z 1021 exa E 1018 peta P 1015 tera T 1012 giga G 109 mega M 106 kilo k 103 hecto h 102 deka da 101 deci d 10-1 centi c 10-2 milli m 10-3 micro μ 10-4 nano n 10-9 pico p 10-12 femto f 10-15 atto a 10-18 zepto z 10-21 yocto y 10-24

## Units of Length

 Units Measurement 10 millimeters (mm) = 1 centimeter (cm) 10 centimeters = 1 decimeter (dm) 10 decimeters = 1 meter (m) 10 meters = 1 dekameter 10 dekameters = 1 hectometer 10 hectometers = 1 kilometer

## Units of Area

 Units Measurement 100 square millimeters (mm2) = 1 square centimeter (cm2) 100 square centimeters = square decimeter (dm2) 100 square decimeters = quare meter (m2) 100 square meters = 1 square dekameter (dam2) 100 square dekameters = 1 square hectometer (hm2) 100 square hectometers = 1 square kilometer (km2)

## Units of Liquid Volume

 Units Measurement 10 milliliters (mL) = 1 centiliter (cL) 10 centiliters = 1 deciliter (dL) = 100 milliliters 10 deciliters = 1 liter1 = 1000 milliliters 10 liters = 1 dekaliter (daL) 10 dekaliters = 1 hectoliter (hL) = 100 liters 10 hectoliters = 1 kiloliter (kL) = 1000 liters

## Units of Volume

 Units Measurement 1000 cubic millimeters (mm3) = 1 cubic centimeter (cm3) 1000 cubic centimeters = 1 cubic decimeter (dm3) 1000 cubic decimeters = 1 cubic meter (m3)

## Units of Mass

 Units Measurement 10 milligrams (mg) = 1 centigram (cg) 10 centigrams = 1 decigram (dg) 10 decigrams = 1 gram (g) 10 grams = 1 dekagram (dag) 10 dekagrams = 1 hectogram (hg) 10 hectograms = 1 kilogram (kg) 1000 kilograms = 1 megagram (Mg) or 1 metric ton(t)

## Units of Length (Area)

 Units Measurement 12 inches (in) = 1 foot (ft) 3 feet = 1 yard (yd) 16½ feet = 1 rod (rd), pole, or perch 40 rods = 1 furlong (fur) = 660 feet 8 furlongs = 1 U.S. statute mile (mi) = 5280 feet 1852 meters (m) = 1 international nautical mile

## International System of Units

 Unit Name Symbol Quantity meter m Length kilogram kg Mass second s Time ampere A Electric Current kelvin K Thermodynamic temperature mole mol Amount of substance candela cd Luminous intensity radian rad Angle steradian sr Solid Angle hertz Hz Frequency newton N Force, weight pascal Pa pressure, stress joule J energy, work, heat watt W Power, radiant, flux coulomb C Electric charge volt V Voltage, electromotive force farad F Electric capacitance ohm Ω Electric resistance tesla T Magnetic flux density degree Celsius 0C Temperature becquerel Bq radioactivity henry H Magnetic induction Angstrom Å Wave length

## Conversion of Units

 Unit I Value in another unit 1 Inch 2.54 centimeter 1 Foot 0.3048 meter 1 Foot 30.48 centimeter 1 Yard 0.9144 meter 1 Mile 1609.34 meter 1 Chain 20.1168 meter 1 Nautical mile 1.852 kilometer 1 Angstrom 10-10 meter 1 Square inch 6.4516 square centimeter 1 Acre 4046.86 square meter 1 grain 64.8 milligram 1 dram 1.77 gm 1 ounce 28.35 gm 1 pound 453.592 gram 1 horsepower 735.499 Watt