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/Home/Home Study/Junior/Math/Unit Conversion length Votes:0 UNITS OF LENGTH History Units of Length Reading a Ruler Conversion Chart Drill and Practice Length answers the question, "How tall, wide, or far is it?" History The Egyptians have evidence that proves that they may be the earliest civilization that discovered a standard unit for length. The Egyptian cubit was developed about 3000 BC, the unit was based on the length of the arm (from the elbow to the extended finger). The Greeks used the width of 16 fingers to find one foot. The Romans adopted the foot from the Greeks and divided it into 12 sections which was called unicae , which came to be known as an inch. The yard was adopted by King Henry I in the 12th century. Many years ago, the US accepted this standard of measurement from London into our customary system. Return to Top Units of Len Read More Go to Site Metric System Votes:0 Metric System and Unit Conversion Metric System Unit System of Measurement The Metric system was developed in France during the Napoleonic reign of France in the 1790's. The metric system has several advantages over the English system which is still in place in the U.S. However the scientific community has adopted the metric system almost from its inception. In fact, the metric system missed being nationalized in this country by one vote in the Continental Congress in the late 1700's or early 1800's. The advantages of the Metric system are: It was based on a decimal system (ie:powers of ten). Therefore, it simplifies calculations by using a set of prefixes which we will discuss in a few minutes. It is used by most other nations of the world, and therefore, it has commercial and trade advan Read More Go to Site Unit Conversion Tables for Areas Votes:0 Unit Conversion Tables for Areas Preliminary note: Before you use this table, convert to the base measurement first, in that convert centimeters to meters, convert kilograms to grams. In this way, I don't have to list every imaginable combination of metric units. from \ to = __ acres = __ feet 2 = __ inches 2 = __ meters 2 = __ miles 2 = __ yards 2 acre 43560 6272640 4046.856... 1/640 4840 foot 2 1/43560 144 0.09290304 1/27878400 1/9 inch 2 1/6272640 1/144 6.4516E-4 2.490976E-10 1/1296 meter 2 2.471054...E-4 10.76391... 1550.0031 3.861021...E-7 1.195990... mile 2 640 27878400 4014489600 2.589988...E + 6 3097600 yard 2 1/4840 9 1296 0.83612736 3.228305...E-7 Note: The notation 1.23 E-4 stands for 1.23 x 10 -4 = 0.000123. To use: Find the unit to convert from in the left column, and multiply Read More Go to Site Weights and Measures Votes:0 Unit Conversion Tables for Lengths Preliminary note: Before you use this table, convert to the base measurement first, in that convert centimeters to meters, convert kilograms to grams. In this way, I don't have to list every imaginable combination of metric units. from \ to = __ feet = __ inches = __ meters = __ miles = __ yards foot 12 0.3048 1/5280 1/3 inch 1/12 0.0254 1/63360 1/36 meter 3.280839... 39.37007... 6.213711...E - 4 1.093613... mile 5280 63360 1609.344 1760 yard 3 36 0.9144 1/1760 Note: The notation 1.23 E-4 stands for 1.23 x 10 -4 = 0.000123. To use: Find the unit to convert from in the left column, and multiply it by the expression under the unit to convert to . Examples: foot = 12 inches; 2 feet = 2x12 inches. Useful Exact Length Relationships mile = 1760 yards = 5280 fee Read More Go to Site Weights and Measures Votes:0 Unit Conversion Tables for Volumes Preliminaty note: Before you use this table, convert to the base measurement first. For example, convert centimeters to meters, or convert kilograms to grams. In this way, I don't have to list every imaginable combination of metric units. from \ to = __ feet 3 = __ gallons (US) = __ inches 3 = __ liters = __ meters 3 = __ pints = __ quarts = __ yards 3 foot 3 7.480519... 1728 28.31684... 0.02831684... 59.84415... 29.92207... 1/27 gallon (US) 0.1336805... 231 3.785411... 0.003785411... 8 4 0.004951131... inch 3 1/1728 1/231 0.01638706... 1.638706...E-5 1/28.875 1/57.75 1/46656 liter 0.03531466... 0.2641720... 61.02374... 1/1000 2.113376... 1.056688... 0.001307950... meter 3 35.31466... 264.1720... 61023.74... 1000 2113.376... 1056.688... 1.307950... pint 0 Read More Go to Site

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