Mathematics Dictionary
Dr. K. G. Shih
Unit
Subjects
Read Symbol defintion
Q01 |
- Unit of angle
Q02 |
- Unit of time
Q03 |
- Unit of templerture
Q04 |
- CGS fundamental unit
Q05 |
- MKS fundamental unit
Q06 |
- Unit of length
Q07 |
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Q08 |
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Q09 |
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Q10 |
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Answers
Q01. Unit of angle
1. Degrees : A circle has 360 degrees.
One degree has 10 minutes.
One minute has 10 seconds.
2. Radians : A circle has 2*pi radians where pi = 3.1416.
3. Relation between degrees and radians.
One dgree = 2*pi/360.
One radian = 360 degrees)/(2*pi).
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Q02. Unit of time
one year = 365 days or 366 days in leap year.
One year has 12 months.
Month has 30 0r 31 days except Feburary
28 days : Feburary if the year is not leap year.
29 days : Feburary if the year is leap year.
30 days : April, June, September and November.
31 days : January, March, May, July, August, October and December.
One day has 24 hours.
One hour has 60 minutes.
One minute has 60 seconds
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Q03. Unite of temperation
Centigrade
0 degree : freezing point (water turns to ice).
100 degrees : boiling point.
Fahrenheid
32 degrees : freezing point (water turns to ice).
212 degrees : boiling point.
Relation between Centigrade and Fahrenheit.
C = (F - 32)*5/9.
F = 9*C/5 + 32.
Specail relation : -40 degree C = -40 degree F
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Q04. CGS fundamental units
C = Centi-meter.
G = Gram.
S = Second.
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Q05. MKS fundamental units
M = Meter.
K = Kilo-gram.
S = Second.
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Q06. Unit of length
Metric system
One kilo-meter = 1000 meters
One meter = 100 cent-meters
One meter = 1000 milli-meters
British system
One mile = 1760 yards = 5280 feet
One yard = 3 feet.
one foot = 12 inches.
Relation between metric system and British system.
One yard = 0.9144 meters.
One foot = 0.3048 meters.
One inch = 0.0254 meters
One mile = 1609.344 meters.
One Knautical mile = 1852 meters
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Q07. Unit of weight
Metric system
One kilogram = 1000 grams
Relation between metric system and British system.
One pound = 0.45359237 kilograms.
One oz = 0.0283495 kilogram.
One inch = 0.0254 meters
One mile = 1609.344 meters.
One Knautical mile = 1852 meters
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Q08. Answer
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Q09. Answer
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Q10. Answer
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