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# Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.

Long description

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## Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.
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## Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.
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## Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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## Calculator anion gap

Calculator to the data calculates the anion gap. http://pl.wikipedia.org/wiki/Luka_anionowa
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## Calculate how much you drink pure ethanol

On the basis of the data entered, the amount of drink and the percentage of alcohol content calculator calculates pure ethyl alcohol that we consume.
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## Percentage calculator

This calculator allows you to calculate the percentage of the given numerical values.
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## Feels like

Calculator on the basis of the given air temperature and wind speed are calculated wind-chill effect.
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## Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.