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The number π (/ p aɪ / ⓘ; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.
Assessments of the crisis's impact in the U.S. vary, but suggest that some 8.7 million jobs were lost, causing unemployment to rise from 5 percent in 2007 to a high of 10 percent in October 2009. The percentage of citizens living in poverty rose from 12.5 percent in 2007 to 15.1 percent in 2010.
European Union regulations require that labels declare energy, protein, fat, saturated fat, carbohydrates, sugars, and salt. Voluntary nutrients may be shown if present in significant amounts. Instead of Daily Values, amounts are shown as percent of Reference Intakes (RIs). For vitamin C, 100% RI was set at 80 mg in 2011. [26]
The triple point is at a temperature of 273.16 K (0.01 °C; 32.02 °F) and a pressure of 611.657 pascals (0.00604 atm; 0.0887 psi); [71] it is the lowest pressure at which liquid water can exist. Until 2019 , the triple point was used to define the Kelvin temperature scale .
Hawaii home values were the highest of all states, including California with a median home value of US$211,500. [254] Research from the National Association of Realtors places the 2010 median sale price of a single family home in Honolulu, Hawaii, at US$607,600 and the U.S. median sales price at US$173,200 .
The Moon is Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period (lunar month) with its rotation period at 29.5 Earth days, causing the same side of the Moon to always face Earth.
Life expectancy for both sexes is among the lowest of all states. [167] Life expectancies in 2014 for both sexes in West Virginia counties ranged from a low of 70.3 years in McDowell County to a high of 79.3 years in Pendleton County. McDowell and several other West Virginia counties are among the counties in the U.S. with the lowest life ...