The 2008 CIA World Factbook, United States. Central Intelligence Agency [primary phonics books .TXT] 📗

15 58 E
Zaire (former name for the Democratic 15 00 S 30 00 E
Democratic Republic of the Republic of the
Congo) Congo
Zakhalinskiy Zaliv (bay) Pacific Ocean 54 00 N 142 00 E
Zaliv Shelikhova (bay) Pacific Ocean 60 00 N 157 30 E
Zambezia (region) Mozambique 16 00 S 37 00 E
Zanzibar (island) Tanzania 6 10 S 39 11 E
Zhong Guo, Zhonghua (local China 35 00 N 105 00 E
name for China)
Zion, Mount (locale in Israel, West Bank 31 46 N 35 14 E
Jerusalem)
Zurich (city) Switzerland 47 23 N 8 32 E

This page was last updated on 18 December, 2008

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Appendix G - Weights and Measures

Note: At this time, only three countries - Burma, Liberia, and the US - have not adopted the International System of Units (SI, or metric system) as their official system of weights and measures. Although use of the metric system has been sanctioned by law in the US since 1866, it has been slow in displacing the American adaptation of the British Imperial System known as the US Customary System. The US is the only industrialized nation that does not mainly use the metric system in its commercial and standards activities, but there is increasing acceptance in science, medicine, government, and many sectors of industry.

Mathematical Notation

Mathematical Power Name

10^18 or 1,000,000,000,000,000,000 one quintillion 10^15 or 1,000,000,000,000,000 one quadrillion 10^12 or 1,000,000,000,000 one trillion 10^9 or 1,000,000,000 one billion 10^6 or 1,000,000 one million 10^3 or 1,000 one thousand 10^2 or 100 one hundred 10^1 or 10 ten 10^0 or 1 one 10^-1 or 0.1 one-tenth 10^-2 or 0.01 one-hundredth 10^-3 or 0.001 one-thousandth 10^-6 or 0.000 001 one-millionth 10^-9 or 0.000 000 001 one-billionth 10^-12 or 0.000 000 000 001 one-trillionth 10^-15 or 0.000 000 000 000 001 one-quadrillionth 10^-18 or 0.000 000 000 000 000 001 one-quintillionth

Metric Interrelationships

Prefix Symbol Length, weight, or capacity

yotta Y 10^24 zetta Z 10^21 exa E 10^18 peta P 10^15 tera T 10^12 giga G 10^9 mega M 10^6 kilo k 10^3 hecto h 10^2 deka da 10^1 basic unit - 1 meter, 1 gram, 1 liter deci d 10^-1 centi c 10^-2 milli m 10^-3 micro u 10^-6 nano n 10^-9 pico p 10^-12 femto f 10^-15 atto a 10^-18 zepto z 10^-21 yocto y 10^-24

Conversion Factors

To Convert From To Multiply By

acres ares 40.468 564 224 acres hectares 0.404 685 642 24 acres square feet 43,560 acres square kilometers 0.004 046 856 422 4 acres square meters 4,046.856 422 4 acres square miles (statute) 0.001 562 50 acres square yards 4,840 ares square meters