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Field and volume of a sphere

Calculator by entering the radius of the sphere is calculated its surface and volume.      


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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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Action at a fraction of the usual

The calculator performs four basic operations with fractions ordinary. The result returns in the form of a fraction improper and nieskracalnego.
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Combination of characters and numbers

Calculator allows to determine the existing combinations for the user-specified string.  
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The volume of a cube

The calculator allows you to calculate the volume of a cube.
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Calculator social security contributions - the calculation of rates in Poland

Jak obliczyć wysokość składek ZUS? Jak obliczyć składkę na ubezpieczenie społeczne? Jak obliczyć ubezpieczenie zdrowotne?
Calculator to calculate gross salary given social security contributions deducted from the salary of the employee and the employer. [since 2008]            
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Coverage of debt

Calculator to the data calculated debt coverage ratio. WPD - is often used as an indicator in assessing credit worthiness.